Unfortunately, if you are not a student of Hertford College, you won’t be able to cross the Bridge of Sighs, but you can certainly admire it from street level and add a photo of it to your collection of Oxford’s marvellous structures.

The real name of the bridge is the Hertford Bridge and it was built in 1914 by Sir Thomas Jackson. It took its popular name from the fact that it is supposed to look just like the bridge of the same name in Venice. Actually, it resembles the Rialto Bridge more than anything else, but the Bridge of Sighs sounds more romantic.

The bridge is a fine example of the Quadrature of the Parabola, developed by Archimedes in the 3rd century BC – a rather difficult geometrical concept in that the area of a parabolic segment is 4/3 of a certain inscribed triangle. It all comes down to the triangle (top) of the bridge being supported by the arch (parabola) because they are of the same base length and height.

Leaving the Maths lesson behind, the bridge is covered and glass panelled and links the college’s Old Quad with the New Quad. According to popular legend, the college once closed the bridge to overweight students, forcing them to get some exercise by taking the long route from one building to another.

***Harry Potter Walk***
Conveniently easy to spot behind Oxford’s very own Bridge of Sighs, the ancient (almost 200-year-old) giant Oak Tree, featured during a duel between Harry Potter and Draco Malfoy in Harry Potter and the Goblet of Fire, can be seen in New College Cloisters. And while the cloisters themselves are closed to the public, a photo of the tree can still be snapped from the roadside!

Bodleian Library is the main research library of Oxford University, and if you are not a student, you can visit it on a guided tour which should be booked in advance.

The Bodleian is one of the oldest reference libraries in Europe and one of the six legal deposit libraries in the United Kingdom, which means that a copy of every book published in the UK and Ireland is required by law to be deposited here.

The 1st library was founded by Thomas Cobham, the Bishop of Worcester, in the 14th century. It was a chained library – the books were chained to the shelves to stop people pinching them. In 1437, after the Duke of Gloucester donated a vast number of manuscripts, the building proved too small, so Duke Humphrey’s Library was built at Divinity School.

Over the years, the library fell into disuse until 1598 when a Fellow of Merton College, Thomas Bodley, had the place renovated and enlarged to receive his collection of books. It reopened in 1602 and took its present-day name. It was also Bodley who made an agreement with the Stationer’s Company in 1610 to put a copy of each of their books in the library. This agreement became the Deposit Law in the 19th century.

The library expanded in 1612 and 1637 and grew popular with Fellows to donate or bequeath their collections. The New Library was built in 1937 and today a tunnel under Broad Street connects the Old and the New Bodleian.

The library holds a staggering 11 million books and other reading matter, 117 miles of shelves and 400 staff members. Among the ancient manuscripts here is a copy of the Magna Charta and the Song of Roland. It also houses one of the last copies of the Guttenberg Bible.

***Harry Potter Tour***
Hidden away in the Bodleian Library, the Duke Humfrey’s reading room revels in a magical atmosphere. Boasting imposing high walls and an intricately painted ceiling, even the smallest of Harry Potter fans will fail to ignore this eye-catching beauty. Presented as the main Hogwarts Library in the film series, it is most memorable for the scene in The Philosopher’s Stone, when Harry uses his Cloak of Invisibility to sneak into the restricted section of the library. We see Harry creeping around here before he is given away by a screaming book.

A visit to the University of Oxford Botanical Garden, situated along the banks of the River Cherwell to the northeast of the Meadow, is an experience that should not be overlooked.

Established in 1621 originally as an herb garden primarily dedicated to medicinal plants, it holds the distinction of being the oldest botanical garden in the United Kingdom and the world's oldest scientific garden. Its founder, Henry Danvers, 1st Earl of Danby, was a prominent figure as a Knight of the Garter.

The garden occupies approximately four and a half acres of land, which previously served as a Jewish cemetery until the Jewish community was expelled from Oxford in 1290. To elevate the land above flood levels, a substantial amount of earth and manure, equivalent to 4000 cartloads, was required.

The garden showcases an impressive collection of over 8000 diverse plant species, thoughtfully organized into three main sections. The Walled Garden, encircled by the original stone walls, houses robust and hardy plants, neatly arranged in long, narrow beds, following a botanical classification. One notable exhibit in this section is the English Yew tree, which has been standing since 1645.

The second part of the garden is devoted to Glasshouses, catering to more delicate plant species. This section encompasses various specialized structures, such as the Alpine House, Conservatory, Fernery, Orchid House, Palm House, Succulent House, and Tropical Lily House.

The final segment, aptly named "Outside the Walled Garden," was established in 1947 and originated from the allotments that belonged to the Fellows of Christ Church. Within this area, you can explore the Autumn Border, Bog Garden, Glasshouse Borders, Herbaceous Borders, Merton Borders, Spring Walk, Vegetable Beds, and the Water Garden.

Magdalen College, one of Oxford University's prestigious institutions, is widely regarded as the most beautiful among its colleges. Established in 1458 by William of Waynflete, the Bishop of Winchester, it occupies a picturesque location next to the River Cherwell and the Oxford Botanic Garden. The college boasts a charming campus with the Meadow, Fellows Garden, and the Grove, where you can see deer in winter and spring. Addison's Walk links the Meadow to Fellows Garden, and a bridge connects it to the main campus.

Magdalen College's history is rooted in the dissolution of Saint John the Baptist Hospital in 1457, whose buildings were repurposed for the college. The Old Kitchen Bar, now serving as the college bar, was once the hospital's kitchen. Construction work commenced in 1470 under the guidance of mason William Orchard. He oversaw the creation of various structures, including the Chapel, the Hall, and the Cloister, which includes the Muniment and Founder's Towers.

A prominent feature of Magdalen College is the Magdalen Tower, a well-known landmark. Since the reign of King Henry VII, the college choir has performed at the top of the tower every May Day at 6 am. The Great Quad, constructed in 1474, showcases architectural grandeur, although the north side was reconstructed in 1822. The New Building, dating back to 1733, adds to the college's architectural diversity. In 1990, the Grove Buildings were erected as the most recent addition to the college's facilities.

Today, Magdalen College stands as one of Oxford's wealthiest and academically renowned colleges. It boasts a legacy of educating members of various royal families, including King Edward VIII of England in 1912–1914, King Jigme Khesar Namgyel Wangchuck of Bhutan in 2000, and Crown Prince Haji Al-Muhtadee Billah, the heir to the throne of Brunei, in 1995. Notable recent alumni include Malcolm Fraser, the former Prime Minister of Australia, and John Turner, the former Prime Minister of Canada.

In the world of literature and academia, Oscar Wilde studied "Greats" at Magdalen College from 1874 to 1878, earning a double first-class degree. C. S. Lewis, a celebrated writer and University College alumnus, was a Fellow and English tutor at Magdalen from 1925 to 1954. Lewis was a member of the Inklings, a literary group that included J. R. R. Tolkien, and they held their meetings in Lewis' Magdalen College rooms.

Merton College, established in 1264 by Walter de Merton, who served as the Lord Chancellor to King Henry III and later to King Edward I, has a rich history. Among its original buildings, the Hall and the Chapel were completed in 1297, but today, only the chapel remains. The chapel is a splendid example of early English Gothic architecture, featuring an imposing east window. Subsequent additions to the college include the South Transept in the 14th century and the North Transept and the Tower in the mid-15th century.

After the dissolution of monasteries in 1548, the college acquired Saint Alban Hall from the Littlemore Convent, although it remained a distinct institution until 1881.

During the English Civil War, Merton College served as the Royalist headquarters and hosted members of Charles I's court, as well as foreign dignitaries like Queen Henrietta Maria of France, who stayed in what is now known as the Queen's Room, situated above the arch between the Fellows and the Front Quads.

Over time, the college expanded its holdings along Merton Street, acquiring the former Parish Church of Saint John and three adjacent houses, forming the north range of the Front Quad.

At one point, Merton College owned extensive land, stretching from the current site of Christ Church in the southeast part of the city to the eastern garden. Corpus Christi College now occupies the land at the west end, under a lease from Merton.

Merton College boasts an impressive list of alumni and academics, including four Nobel laureates and the renowned writer J. R. R. Tolkien, who held the position of Merton Professor of English Language and Literature from 1945 to 1959. Known for its academic excellence, Merton College consistently ranks at the top of the Norrington Table and is recognized as one of the wealthiest colleges in Oxford.

Christ Church Cathedral holds a unique position as both a college chapel and the cathedral of the Diocese of Oxford. Prior to the 20th century, it was also the smallest cathedral in the United Kingdom.

Its historical roots trace back to before the Norman Conquest when a shrine was constructed on the site in memory of Saint Frideswide, a 7th-century priestess who faced persecution and sought to protect her chastity from King Algar, one of the rulers of the Seven Kingdoms of Saxony.

By 1122, the cathedral became a part of Saint Frideswide Priory. However, in 1520, Cardinal Wolsey seized the buildings and lands to establish Cardinal College. To make room for what is now Tom Quad, five bays in the western part of the nave were demolished. Eventually, King Henry VIII took over and had Christ Church College constructed upon the foundation.

The remainder of the cathedral was built in the Perpendicular or English Gothic style. The eastern part of the nave, the choir, and the tower retained the original Norman appearance.

Notable features include the exquisite rose window in the Botanical style with ten petals around the central glass. Other noteworthy windows are the Becket Window from 1320, which survived the Reformation, and the Jonah Window, depicting the City of Nineveh, created in 1632.

The shrine of Saint Frideswide has been restored and stands before a stunning stained glass window with 16 panels recounting her life. An interesting detail is the 16th panel, which includes a water-closet, a clear indication of its Victorian origin, certainly not present in the 8th century.

The Cathedral Shop, where visitors can purchase souvenirs, books, CDs, and other gift items, is located in the 12th-century Chapter House. While perusing the shelves, be sure to admire the vaulted ceiling adorned with 13th-century medallions depicting the Saints.

Oxford takes great pride in its rich history and dedicates significant resources to maintaining its ancient structures, as evidenced by the preservation efforts at Oxford Castle. This partially ruined Norman castle stands on the western outskirts of the town, just off New Road. Initially, it consisted of a wooden motte and bailey castle, which was later replaced by stone buildings in the 11th century.

During the conflict between England and Normandy from 1135 to 1153, the castle served as a strategic base for Empress Matilda, the daughter of King Henry I, in her quest to claim the English throne from her cousin, King Stephen. King Stephen besieged the castle with siege engines, but Matilda managed to escape, leading to the surrender of the castle's occupants before a full-scale battle could commence.

In the 13th century, further fortifications were added, including the construction of the Round Tower and the restoration of the chapel. King Henry III utilized the castle as a prison. However, during the English Civil War, the castle suffered significant damage and continued to function as a prison after the war's conclusion.

In 1888, the prison underwent expansion and operated as HM Prison Oxford until its closure in 1996. Today, only the motte and Saint George's Tower remain as remnants of the original castle.

The former prison buildings have been repurposed into a luxury hotel, office spaces, a shopping center, and a heritage complex. The castle's courtyard now hosts an open market and frequently features theater performances.

Additionally, Oxford Castle offers guided tours led by guides dressed in period costumes, providing insights into the castle's history. Visitors can explore Saint George's Tower, visit the crypt, and access the motte with its vaulted Well Chamber as part of the tour experience.

Oxford University had its origins in academic institutions and monastery buildings where theology was the primary subject of study. However, these early establishments did not survive the Reformation period. Trinity College, located on Broad Street, now occupies the site where Durham College Monastery was established back in 1268.

The only remaining part of the original monastery is the east section of Durham Quad, which now houses the college library. In 1555, Sir Thomas Pope purchased the buildings and land with the intent of creating a college. He hoped that future generations would remember him through their prayers since he had no children to carry on his legacy. His final resting place is within the chapel, next to the altar.

The college's West Tower is adorned with four statues representing Astronomy, Geometry, Medicine, and Music. In 1688, a two-story building designed by Sir Christopher Wren was constructed in the Garden Quad to accommodate students. The neoclassical chapel, designed by Henry Aldrich, was added in 1694.

In 1883, the college underwent expansion, with the construction of the Front Quad overseen by Sir Thomas Jackson. In 1928, the Memorial Library was erected to honor the members who had lost their lives during World War I. Further expansion took place in the 1960s when several cottages and 17th-century houses were acquired, and the Cumberbatch Building was built in 1966.

Despite its considerable physical footprint, the college maintains a relatively modest student population of around 400. Initially established as a men's college, it became coeducational in 1979. Trinity College boasts the distinction of having produced three British Prime Ministers: Spencer Compton (1742–1743), William Pitt the Elder (1766–1768), and Frederick North (1770–1782). This places it third in terms of former students who have held the prestigious office, following Christ Church and Balliol College in that regard.