Athens has been the center of Greek civilization for some 4,000 years. The capital of modern Greece, it’s still dominated by 5th-century-B.C.E. landmarks, including the Acropolis, a hilltop citadel topped with ancient buildings such as the colonnaded Parthenon temple. But it’s also a contemporary city, and it’s not uncommon for the nightlife hubs of Kolonaki, Psiri and Gazi to stay busy until dawn.