Capital of Greece and the country’s largest city, Athens is dominated by the flat-topped hill of the Acropolis, site of the 2400-year-old Parthenon, one of the most famous classical monuments in the world. Close by lie the Theater of Dionysus and the restored Odeon of Herodes Atticus, a superb theater in which open-air performances of the “International Athens Festival” are held from June to September. The ruins of the civic, political and commercial center of the Ancient Agora can be visited, as can the reconstructed Hellenistic Stoa of Attalos, which houses the Agora Museum. Most artifacts are displayed in the National Archaeological Museum on Patission Street. The old quarter of the town, Plaka, which spreads around the Acropolis, is picturesque with its famed flea market, small tavernas, craft shops and narrow winding alleys. The excavations of the Library of Hadrian can be observed from Pandrossou Street. The center of modern Athens, most notably the chic area of Kolonaki, has many designer boutiques, smart restaurants and international-class hotels. The city has a thriving nightlife, with most bars and clubs staying open until at least 03:00.