Vilnius is a cosmopolitan city with diverse architecture. There are more than 40 churches in Vilnius. Restaurants, hotels and museums have sprouted since Lithuania declared independence. Like most medieval towns, Vilnius was developed around its Town Hall. The Old Town, the historical centre of Vilnius, is one of the largest in Europe (3.6 km²). The most valuable historic and cultural sites are concentrated here. The main sights of the city are Gediminas Castle and Cathedral Square, symbols of the capital. The Old Town of Vilnius was inscribed on the UNESCO World Heritage List in 1994. In 1995, the first bronzecast of Frank Zappa in the world was installed near the center of Vilnius with the permission of the government.