Athens improved the infrastructure and social amenities radically improved due to organizing the Olympic Games in 2004. Large parts of the city centre have been redeveloped and the famous Dionysiou Aeropagitou street has been pedestrianised, forming a scenic route. The route starts from the Temple of Olympian Zeus at Vasilissis Olgas Avenue, continues under the southern slopes of the Acropolis near Plaka and finishes just outside the Temple of Hephaestus in Theseum. This route provides the visitors views of the Parthenon and the Agora (the meeting point of ancient Athenians), away from the busy city centre. Syntagma Square (Constitution Square) is situated in central Athens and it is the site of the former Royal Palace, now the Greek Parliament. The National Garden behind the Parliament and stretching to the Zappeion is a verdant oasis in the center city. Syntagma is the largest square of the city and it is also home to a number of luxurious hotels. Near Syntagma Square stands the Kallimarmaro Stadium, the place where the first modern Olympic Games took place in 1896.  Athens features a number of hills.