Syntagma is a station on the Athens Metro, located at Syntagma Square in the center of Athens, Greece. It serves as the transfer point between Line 3, Line 2 and the Athens Tram. When the Metro first opened, on 28 January 2000, the station was the terminal station for both the new lines. The centerpiece of the city's metro network, it is a transportation hub for buses and the northern terminal for the Tram. It is the busiest station in the Athens transport system, located underneath Syntagma Square, the political centre of Athens. It serves Ermou Street, the Old Royal Palace, various government agencies, foreign embassies and the National Garden.