Ygeia Hospital

AEK Athletic Club was one of the first Greek clubs to found a youth academy back in 1934, while AEK Athens Football Club have managed them since 1979.

The opening ceremony of the 2004 Summer Olympics was held on August 13, 2004 starting at 20:45 EEST (UTC+3) at the Olympic Stadium in Marousi, Greece, a suburb of Athens. As mandated by the Olympic Charter, the proceedings combined the formal and ceremonial opening of this international sporting event, including welcoming speeches, hoisting of the flags and the parade of athletes, with an artistic spectacle to showcase the host nation's culture and history. 72,000 spectators (with nearly 50 world leaders) attended the event, with approximately 15,000 athletes from 202 countries participating in the ceremony as well. It marked the first-ever international broadcast of high-definition television, undertaken by the U.S. broadcaster NBC and the Japanese broadcaster NHK. The Games were officially opened by President of the Hellenic Republic Konstantinos Stephanopoulos at 23:46 EEST (UTC+3).

The closing ceremony of the 2004 Summer Olympics was held on 29 August 2004 21:15 EEST (UTC+3) at the Olympic Stadium, in Marousi, Greece, a suburb of Athens.

The women's discus throw competition at the 2004 Summer Olympics in Athens was held at the Olympic Stadium on 20–21 August. It was originally planned to hold the discus throw at the Ancient Olympia Stadium, but it was discovered that the field was not large enough to accommodate the range of modern discus throwers, and would have posed a danger to spectators. As such, it was decided to move the discus throw and to hold the shot put at the ancient stadium, despite the fact that the shot put was not contested at the Ancient Olympic Games.On December 5, 2012, Belarusian discus thrower Iryna Yatchenko was stripped of her bronze medal after drug re-testings of her samples on methandienone had been discovered positive. Following the announcement of Yatchenko's disqualification, the International Olympic Committee Executive Board had distributed and awarded the bronze to Czech Republic's Věra Pospíšilová-Cechlová, who originally finished fourth in the final.

The German School of Athens (German: Deutsche Schule Athen, DSA; Greek: Γερμανική Σχολή Αθηνών, ΓΣΑ), also known as the Dörpfeld Gymnasium, is a coeducational independent, kindergarten, elementary school and high school in Marousi, Athens, Greece.The school has been in operation since 1896 and was founded by architect and archeologist Wilhelm Dörpfeld. It is one of the oldest and most prestigious private schools in Greece, after a very large number of students graduating from the school has excelled in politics, the arts, science and business. While at kindergarten and elementary school level no differentiation of school systems is made, high school is currently split into a German section (with students eventually graduating with the German high school diploma) and a Greek section (with students graduating with German and optionally an additional Greek high school diploma). Pupils take entry exams in order to become students of the latter section so the school is considered highly selective. However, the school is currently undergoing a transition phase towards a unitary high school system. Upholding the tradition of an environment friendly school, the German School of Athens had Greece's largest solar roof installed before the 2004 Olympic Games. The project was backed by German Federal Ministry of Economics and Labor (BMWA), the German Energy Agency and the Greek-German Chamber of Commerce and Industry.

Rizarios (or Rizareios) Ecclesiastical School of Athens (Greek: Ριζάρειος Εκκλησιαστική Σχολή Αθηνών ή Ριζάρειος Σχολή) is a Greek Orthodox historical educational institution founded at 1841, by Manthos and Georgios Rizaris, who was members of the Society of Friends (Filiki Eteria).

The men's tournament of water polo at the 2004 Summer Olympics at Athens, Greece, began on August 15 and lasted until August 29, 2004.

The O.A.C.A. Olympic Indoor Hall (honorarily named Nikos Galis Olympic Indoor Hall since 2016), which is a part of the Olympic Athletic Center of Athens (O.A.C.A.) «Spyros Louis» (Greek: O.A.K.A. «Σπύρος Λούης»), was completed in 1994, and is the largest indoor venue in Greece and was used for sporting events at the 2004 Summer Olympics held in Athens, Greece. It is located in Marousi, in the north section of the city. During their construction and renovations was considered to be one of the biggest and most modern indoor sports arenas in all of Europe. The 19,443-capacity arena also contains a training facility. Since 2016, it has been named after the well-known Greek former basketball player of Aris Thessaloniki and Panathinaikos «Nikos Galis».

The Olympic Athletic Center of Athens Spiros Louis (Greek: Ολυμπιακό Αθλητικό Κέντρο Αθηνών "Σπύρος Λούης", Olympiakó Athlitikó Kéntro Athinón "Spýros Loúis") or OACA (OAKA)), is a sport facilities complex located at Marousi, in the north section of the city. The complex consists of five major venues as well as other supplementary sport facilities. The Olympic Athletic Center of Athens has hosted the Mediterranean Games in 1991, the World Championship in Athletics in 1997 as well as other important athletic and cultural events. The most significant event the Athens Olympic Sports Complex has hosted, was the Olympic Games. OACA was the main venue for the Athens Olympic Games in 2004. The complex was revamped for the games under a design produced by the Spanish architect Santiago Calatrava.

The Athens Olympic Tennis Centre is a grouping of 16 tennis courts at the Athens Olympic Sports Complex, in Marousi, Athens, Greece. The centre consists of a main stadium, known as The Main Court, seating 8,600 fans - though only 6,000 seats were made publicly available during the 2004 Summer Olympics and 2004 Summer Paralympics- two semifinal courts, seating 4,300 spectators - though only 3,200 seats were made publicly available during the Olympics - and thirteen side courts, seating 200 observers each. Each of the courts use the DecoTurf cushioned acrylic surface, the same surface as the U.S. Open Grand Slam event. The Main Court, in particular, is extremely large by the standards of major tennis competitions, with the seats being relatively far removed from the tennis court.

The Athens Olympic Tennis Centre Main Court, commonly known simply as, "The Main Court", is the main stadium of the Athens Olympic Tennis Centre, which is a group of 16 tennis courts, located at the Athens Olympic Sports Complex. The Main Court seats 8,600 people for tennis matches.

Kifisias Avenue (Greek: Λεωφόρος Κηφισίας) is one of the longest and busiest avenues in the Greater Athens area, Greece, containing the headquarters of many Greek and foreign companies and organizations.