The iconic Prague Castle is the city's most popular attraction, located atop the Vltava's left bank. Its incredible collections of spires, towers and palaces create an awe-inspiring sight, resembling a fantasy-like stronghold. Within its walls lies a rich selection of historic buildings, museums and galleries, full of Czechia's most prized artistic and cultural wonders. Visitors will need to present their identification (passport or EU identification card) when entering the grounds, so make sure to bring it with you.