Greece, on the southernmost tip of the Balkan peninsula, has extensive coastlines and islands in the Aegean, Ionian, and Mediterranean Seas. It has an ancient culture that has had a significant influence on the arts, language, philosophy, politics, and sports of western society. Athens, its capital, retains landmarks including the 5th-century B.C. Acropolis citadel with the Parthenon temple. Greece is also known for its beaches, from the black sands of Santorini to the party resorts of Mykonos.