Prague castle complex is the largest such structure in the world and, therefore, it has entered the Guinness Book of Records. Prague castle, as a coherent castle complex takes up to the 70 000 square meters in space.
Acropolis – the heritage of ancient Greece
In Greek Acropolis means „upper town“or „ highest town“. In ancient Greece human habitats were built so that any potential invaders were visible from afar, and their reach the gates of the city was the most difficult.