Leshan Chengdu ZhuoYing ancient bridge, Sichuan Province, China
Roman ruins in Ostia Antica, near Rome, Italy
Calanais standing stones on the Isle of Lewis in Scotland on a cloudy day with a blue sky, UK
El Castillo at Ingapirca, the most important Inca ruins in Ecuador
Parthenon temple on a bright day, Acropolis in Athens, Greece
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