The Obelisk of Buenos Aires stands at the intersection of the two most important roads of the city. Erected to commemorate the 400th Anniversary of Buenos Aires, it has over the years become the main symbol of the city.
The Obelisk of Buenos Aires was designed by architect Alberto Plebisch who was famous for constructing Tucuman modernist structures. It was built by the German construction company, G.E.O.P.E. - Siemens Bauunion - Grün & Bilfinger who completed construction in a record 31 days. The location chosen was that of the demolished San Nicholas of Bari church where the Argentine Flag was first hoisted in 1812. It was made of concrete and Olaen white stone from the Cordoba region.
The Obelisk of Buenos Aires was inaugurated in May1936. It is 67.5 meters high and ends in a lightning rod. There is one entrance and one can reach the top to view the city from the four windows at the summit by climbing 206 steps. The monument has suffered vandalism and covered with graffiti with political overtones. Some Argentine dictators have placed forbidding signs on the obelisk. It is also the venue of celebrations caused by Argentine sporting victories, music concerts, political demonstrations, religious congregations and candlelight vigils.

La Manzana de Las Luces - The illuminated block - is a national historical monument that was built by the Jesuits in the early 18th Century. Its name comes from the bright students who lived here, at the site of the first Medicine school as well as the famous University of Buenos Aires. In this intellectual center you can also find the Museum of Site and the Church of San Ignacio. You can also visit the historical tunnels which link several chapels with the Cabildo and the port.

This eighteenth century church served many purposes since its construction. The actual name of the Basilica de Santo Domingo is Basilica de Nuestra Senora del Rosario.
The Basilica de Santo Domingo stands on the site of a Dominican monastery. The church was completed in 1793. It later housed a natural history museum and astronomic observatory. The British attempted to sieze Buenos Aires in 1806 and were holed up in the church. They were defeated and shrapnel on the Eastern Tower is a reminder of the attack. In 1835, the church was restored to the Dominican friars who built a second tower in 1856.
Today, there is a small museum called the Museo de la Basilica del Rosario that tells the story of the conflict with the British and has relics of the battle including captured British flags. The courtyard has a large mausoleum of General Manuel Belgrano, an Argentine national hero who was born and died near the basilica. The mausoleum was created by Hector Ximinez. It has a large red granite base and two bas reliefs depicting the presentation of the flag and the battle of Tucumen. The richly ornamented interiors have shrines dedicated to saints and plaques in honor of the brave soldiers who defeated the British and prevented an invasion.

This historical building once served as an edifice of government, and was also the place where Argentina's independence movement began - hence its nickname, the May Revolution palace. Today, Cabildo is guarded by sentinels and houses a history museum that exhibits diverse objects from Argentine history. The artifacts preserved from the 18th century and the May Revolution period include: uniforms, furniture, maps, documents and other interesting objects.

The Metropolitan or City Cathedral is the home of the Catholic Church in Buenos Aires. The construction of the cathedral has a long history, having been built over many years. Its chapel, built in the 18th Century, has carvings that tell the biblical story of Jacob and his son. Other parts of the cathedral combine diverse architectural styles, and here you can find numerous sculptures and carvings. It also houses the ashes of the famous General José de San Martín.

The May Pyramid commemorating the May revolution in Argentina is the oldest national monument in Buenos Aires. It was declared a National Historic Monument in May 1942.
The May Pyramid was designed by architect Pedro Vincente Canete and professor of sculpture, Juan Gaspar Hernandez and completed in 1811. It was inaugurated in May 25th 1855 although the pyramid was not yet complete. A 13 meter tall pyramid stood on a two meter tall pedestal.
The present pyramid was built over the old pyramid designed by Canete. Architect Prilidiano Pueyreddon was given the task of redesigning the pyramid and he turned the old structure into an artistic and ornate one. The top of the May Pyramid was adorned with a statue of liberty sculpted by French sculptor Joseph Dubordieu. The base has carvings related to art, commerce, science and agriculture. In 1906, the pyramid was relocated to a site 63 meters east of the original location to make way for a larger monument that was never built. The ashes of the founder of the protest movement Madres de Plaza de Mayo, Azucena Villaflor are buried at the base of the pyramid. The organization she founded consisted of mothers who agitated against the disappearance of their children during the last military dictatorship in Argentina.

Casa Rosada also called The Government House, was settled in 1957. It is an old administrative building and at the same time it is The Presidential Palace. The edifice’s color by the legend was chosen pink in order to unify the colors of opposing political fractions: red and white. Casa Rosada is surrounded by a beautiful garden where you can rest and enjoy the picturesque view.

The Puente de la Mujer - The Woman's Bridge is a footbridge in the Puerto Madero district of Buenos Aires. It was funded by Argentine businessman Alberto L Gonzalez who was responsible for the modernization of the Puerto Madero district. Today, the district has the best restaurants and nightclubs in the city.
The Puente de la Mujer - The Woman's Bridge gets its name from the fact that most streets in Puerto Madero are named after prominent Argentine women. It was designed by innovative Spanish architect, Santiago Calatrava and built between 1998 and 2001. It has a cantilever spar cable stayed bridge style combined with a swing bridge style. It is unique because the cables connect to a single mast from a portion of the bridge and the mast swings 90 degrees to allow water traffic to pass. When the bridge swings the far end comes to rest on a single pylon. It also has a unique forward angled cantilever.
The design of The Puente de la Mujer - The Woman's Bridge resembles a movement in a tango dance. The 128 foot arm resembles the man when a couple is in mid tango. Twenty engines rotate to allow watercraft to go through. It was made in Spain and shipped for assembly in Buenos Aires.

The British Clock Tower now called the Torre Monumental is an Elizabethan style clock tower donated to Buenos Aires by the British after completing the construction of Retiro Railroad Station Complex. It commands spectacular views of the port and railway station from the top.
The British Clock Tower was designed by Sir Ambrose McDonald Poynter and built between 1910 and 1916. It was built by the construction firm, Hopkins and Gordom. The white Portland stone and Leicester bricks used for construction were shipped from England. The technical personnel were also sent from England to supervise construction. The architectural style is Palladian and is adorned with symbols of the British Empire. It is 247 feet high with eight floors. There are shields of Argentina and Britain at the entrance.
The tower was renamed and often vandalized after the Falklands Islands or Islas Malvinas War. Graffiti showing bitterness over the defeat in war is often found on the walls. Today, there is a small gallery of photographs inside the British clock tower. Visitors can take a free ride in a glass elevator to the top of the tower for taking in the view. There is a small Buenos Aires Tourism Information Center in the tower to help visitors.