The Postal and Philatelic Museum showcases stamps and other postal material that are of interest to visitors and philatelists. The museum was established in 1978. The house was once owned by the wealthy Athenian Stratos family. It forms part of the Greek postal service, Hellenic Post.
The Museum consists of three halls, the postal hall, the philately hall and a hall in the first floor where meetings and seminars are held. There is also a library with postal service related circulars, bulletins and books and material relating to the activities of the Greek Philatelic Club that date back to 1865.
Exhibits in the Postal Hall include boxes, franking machines, bags, horns and a range of objects used by post, telegraph and telephone services. Mailboxes and weighing machines dating back to the 19th century are also on display. The museum also houses an impressive collection of stamps in the Philately hall including stamps from the 1st Olympics, the Hermes Head stamps and seals. There is also a section devoted to stamp printing techniques and the models used as the original subjects of stamp art.
The museum organizes a one hour conducted tour for groups of 10 persons and for educational institutions. The tour includes a short film about Hellenic Post and philately.

The Arch of Hadrian is a monumental gateway resembling – in some respects - a Roman triumphal arch. It spanned an ancient road from the center of Athens, Greece, to the complex of structures on the eastern side of the city that included the Temple of Olympian Zeus. The entire monument is made of Pentelic marble, from Mt. Pentelikon, 18.2km northeast of the arch. The upper level of the arch (the attic) was composed of a series of Corinthian columns and pilasters dividing the space into three rectangular openings. Each of the outer openings was crowned with an Ionic architrave capped with dentils and a projecting geison, in the manner of the lower level. It is 18m high, 13.5 m wide, and 2.3m in depth. Its design is fully symmetrical from front to back and side to side. The arch is located 325m southeast of the Acropolis.

Located at the entrance to the National Garden of Athens, this marvelous monument portrays Lord Byron, a romantic poet, who loved Greece and Athens. The statue was erected in 1896.

The temple of the Olympian Zeus or Olympeon is a large temple located in the center of the city of Athens. When construction was completed by the Roman Emperor, Hadrian, it was the largest temple in Greece housing the biggest among cult statues.
Construction of the Temple of Olympian Zeus began in the 6th Century BC commissioned by the ruling Athenian Tyrants who planned to build the largest temple in the world. After tyranny was overthrown, construction was abandoned and it was completed after 650 years by the Roman ruler Hadrian who was an admirer of the culture of classical Greece. At the time of completion, the interior had a gold and ivory statue of Zeus and a statue of the Emperor Hadrian. It had 104 Corinthian columns of which only 15 remain standing. The other columns were destroyed by successive conquerors that used them as building material and by natural causes like earthquakes. A 16th column that fell during a storm in 1852, lies near the ruined temple.
Today, the remains of the magnificent Olympeon stands in a busy traffic roundabout near the national park. It is under the control of the Ephorate of Antiquities of the Greek Interior Ministry. In 2007, a ceremony was held by Hellenic Neopagans under the aegis of Ellinais, an organization that won a court battle to recognize cult practices honoring Zeus, the ruler of the Gods in ancient Greece.

Located between the National Gardens and the Temple of the Olympian Zeus, is a large conference hall called the Zappeion. It gets it s name from the men who donated the funds for the building, Greco Rumanian millionaire, Evangilis Zappas and his cousin Konstantinos Zappas.
The original plans of the Zappeion were formulated by French architect, Francois Boulanger. They were later modified by Danish architect, Theophilus von Hansen. The building was constructed between 1874 and 1888. In the Summer Olympics of 1896, it served as the main fencing hall and in the Olympic Games of 1906, it was the Olympic Village. It is now used as a conference center and exhibition hall. In 1981, it was the venue of the accession of Greece to the European Economic Community. The Zappeion was remodeled by architect, Vassilis Sgoutas in 1982 to house the offices of the Greek Presidency of the EEC.
The Zappeion has 25 halls ranging from 97 square meters to 984 square meters. The exhibition hall is one of the best examples of Athenian classicism. The building has a Corinthian portico and two side wings lined with decorated pillars. The entire design alternates open and closed spaces making it environmentally friendly in addition to being a visual delight.

The Presidential Palace is a three storey neoclassical mansion located near the national garden and parliament in Athens. It is the official residence of the President of the Hellenic Republic.
The Presidential Palace was the official residence of the Greek Royal Family before the 1974 referendum that abolished the monarchy. The building was designed by architect, Ernst Ziller and constructed between 1891 and 1897. It was used at first as the Crown Prince’s Palace. In 1909, a fire destroyed the main palace that now houses the Greek parliament and in 1913 it became the official residence of the royal family.
At first the structure was simple without any elaborate ballrooms as was customary in other palaces. When the royal family started using the building, Ziller designed an extension in 1909 for a ballroom which is now used when foreign ambassadors present their credentials to the Greek President. In 1962, Alexander Baltatzis designed another extension called the reception hall for the engagement of Sophia, Princess of Greece with Prince Juan Carlos of Spain. It is the largest room in the palace. The Presidential Mansion today, is surrounded by gardens and covers an extent of about 7 acres. The building is not open for public viewing.

From 1982, the Maximos Mansion was used as the official seat of the Prime Minister of Greece. It occupies a central location in Athens near the Presidential Palace and the Greek Parliament.
Construction of the Maximos Mansion began as the residence of Alexandros Michalinos, a Greek ship owner in 1912. He purchased the land that was once the vegetable garden of the Royal Palace. In 1916, his widow married Greek banker and politician, Dimitrios Maximos. The incomplete building was sold by Maximos to Leonidas Emperikos, another shipping magnate. Maximos bought the structure back and completed the construction of the neo classical style building in 1921. The family moved in and lived there in the 1920s. The design was by architects Anastasios Helmis and Anastasios Metaxas.
The German Admiral of the Aegian Sea used the mansion as his official residence during the German occupation of Greece. The US ambassador to Greece used the building as the official residence for a short span of time after World War II. The government of Greece purchased the mansion from Maximos in 1952. Until 1982, the building was not put to any official use. Though it is the seat of the Greek prime minister, it is not his official residence. The building is not open for tourists and visitors.

The building that houses the Hellenic Parliament or Vouli in Athens was the old palace of the Greek royal family. It was damaged by a fire in 1909 and the royal family moved to the new palace which is now the Greek Presidential Mansion.
The neoclassical Parliament House was built between 1836 and 1840 based on the plans formulated by Bavarian architect, Freidrich von Goertner. It served as the official residence of Otto, the first King to rule Greece after the end of the Turkish occupation. Otto’s father King Ludwig of Bavaria financed the construction of the neoclassical style building. In 1930, it was remodeled by architect, Andreas Kreizis to make it a suitable parliament house. In 1935, it became the building of the National Assembly of Greece.
The parliament house is a rectangular building divided into two courtyards. The façade and the back are fitted with Doric style columns. The offices of the President of the National Assembly, archives and other services are located within the building. Outside parliament house stands a monument dedicated to the Unknown Soldier, guarded by an elite regiment called the Evzones. The changing of guard every hour by the Evzones is a popular tourist attraction in Athens.