Which is the largest castle in the world? The one in Prague of course! You can wander around its courtyards, palaces, museums and garden all day long and whilst doing so, admire the overwhelming beauty of a place which has been the seat of Czech kings, emperors and presidents for a thousand years. The whole castle grounds are dominated by the monumental St. Vitus Cathedral, which is one of the most beautiful in Europe. Discover the secret of this symbol of the Czech Republic and a place which makes Prague one of the most beautiful cities in the world.
http://www.czechtourism.com/c/prague-castle/