Bathing pool in rock palace fortress on rock summit, Sigiriya, UNESCO World Heritage Site, Central Province, Sri Lanka, Asia

The Ossuary building, Tomb of the Great Priest, Mayan ruins, Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Garden of historic castle in medieval village of Marvao, Portalegre district, Alto Alentejo, Portugal, Europe

Casa Colorado, Mayan ruins, Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Ancient ruins of the 12th century BC Archaeological Site of Mycenae, UNESCO World Heritage Site, Peloponnese, Greece, Europe

Angkor Wat, UNESCO World Heritage Site, a Hindu-Buddhist temple complex near Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

The tiny 18th-century Stavropoleos Church is one of the most beautiful religious monuments in the capital of Romania. Tucked away between taller buildings in Bucharest´s Old Town, the monument was originally part of Stavropoleos Monastery

The Terrace of the Elephants, part of the walled city of Angkor Thom, a ruined temple complex in Angkor, UNESCO World Heritage Site, Cambodia, Indochina, Southeast Asia, Asia

Obelisk of Queen Hatshepsut, Karnak Temple Complex, UNESCO World Heritage Site, Luxor, Egypt, North Africa, Africa

The Greek temples of Paestum, UNESCO World Heritage Site, Campania, Italy, Europe

The ruins of the Roman town of Dougga, a UNESCO World Heritage site, valley of Oued Khalled, northwest Tunisia

Pylon 9 with Reliefs, Karnak Temple Complex, UNESCO World Heritage Site, Luxor, Egypt, North Africa, Africa

The Great Papyrus Columns, Hypostyle, Karnak Temple Complex, UNESCO World Heritage Site, Luxor, Egypt, North Africa, Africa