Is it true that a place once covered in water will become water-covered again? The water volume remains the same, yet its state changes. Light grinds the landscape and warns ships against possible wracking. The signalling system, that we, landsmen, are so unfamiliar with, introduces light that conveys its warning message. It brings on the wind and waves splash against the Prague Castle. The Petřín Hill is turned into an island and light propagates from its lighthouse.
Karel Hynek Kintera
The Petřín observation tower likes to compare its altitude with the altitude of other observation
towers and high-rise buildings.
The highest point.