prague is full of historical monuments in all major artistic styles. the historic center of prague is on both banks of the vltava river. this historical center has six districts, which were once independent cities that joined together in the 18th century. these districts are staré město (old town), pražský hrad (prague castle), josefov (old jewish town), nové město (new town), malá strana (lesser town), hradčany (prague castle quarter) and vyšehrad. it was prince bořivoj who established prague castle. there are also lots of museums, galleries, theaters, concert halls, and other historic buildings.