Looking uphill at the Great Wall of China, Mutianyu in Huairou District near Beijing, China
Landscape with medieval Aragonese Castle, Ischia island, Gulf of Naples, Italy
Prehistoric ruins built into a cliff in Canyon de Chelly, Arizona, USA
Structures for observation in Jantar Mantar Astrological Park, Jaipur, India
Apollo Temple's entrance ruins, Portara Gate at sunset, Naxos Island, Greece
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