Prague Castle - Largest Ancient Castle In The World

In my travels to the Czech Republic, in Prague, I also visited the Prague castle. According to the Guinness world records, this is the largest ancient castle in the world, occupying an area of almost 70,000 square meters. It looks like the history of this castle began in 870 when the first church was built and fortifications started. In 1541, most of the castle burned down due to the fires there.