making it a hotspot for the city in the last decade, while live music restaurants known as "rebetadika", after rebetiko, a unique form of music that blossomed in Syros and Athens from the 1920s until the 1960s, are to be found. Rebetiko is admired by many, and as a result rebetadika are often crammed with people of all ages who will sing, dance and drink till dawn. The Gazi () area, one of the latest in full redevelopment, is located around a historic gas factory, now converted into the Technopolis cultural multiplex, and also includes artists' areas, active nightlife and night clubs, small clubs, cafeterias, bars and restaurants, as well as Athens's "Gay village". The metro's expansion to the western suburbs of the city has brought easier access to the area since spring 2007, as the line 3 now stops at Gazi (Kerameikos station). Syntagma, Syntagma Square, (/Constitution Square), is the capital's central and largest square, lying adjacent to the Greek Parliament (the former Royal Palace) and the city's most notable hotels. Ermou Street, an approximately pedestrian road connecting Syntagma Square to Monastiraki, is a consumer paradise for both Athenians and tourists. Complete with fashion shops and shopping centres promoting most international brands, it now finds itself in the top five most expensive shopping streets in Europe, and the tenth most expensive retail street in the world. Nearby, the renovated Army Fund building in Panepistimiou Street includes the "Attica" department store and several upmarket designer stores. Plaka, Monastiraki, and Thission – Plaka (), lying just beneath the Acropolis, is famous for its plentiful neoclassical architecture, making up one of the most scenic districts of the city. It remains a prime tourist destination with tavernas, live performances and street salesmen. Nearby Monastiraki (), for its part, is known for its string of small shops and markets, as well as its crowded flea market and tavernas specialising in souvlaki. Another district known for its student-crammed, stylish cafés is Theseum or Thission (), lying just west of Monastiraki. Thission is home to the ancient Temple of Hephaestus, standing atop a small hill. This area also has a picturesque 11th-century Byzantine church, as well as a 15th-century Ottoman mosque. Exarcheia (), located north of Kolonaki, often regarded as the city's anarchist scene and as a student quarter with night clubs, cafés, bars and bookshops. Exarcheia is home to the Athens Polytechnic and the National