View of Roughs Tower, the former defense plattform, a Maunsell Sea Fort, now the Principality of Sealand, North Sea, Europe

View of Roughs Tower, the former defense plattform, a Maunsell Sea Fort, now the Principality of Sealand, North Sea, Europe

Tzompantli, skull plattform, Maya and Toltek archeological site Chichen Itza, new worldwonder, Yucatan, Mexico

USA, United States of America, New York City: Tourists on the viewing plattform of the Empire State Building

USA, United States of America, New York City: Tourists on the viewing plattform of the Empire State Building

USA, United States of America, New York City: Tourists on the viewing plattform of the Empire State Building

Vieing plattform Stegastein overlooking Aurlandsfjord, Aurland, Norway, Europe

Vieing plattform Stegastein overlooking Aurlandsfjord, Aurland, Norway, Europe