Neolithic stone circle and henge at Avebury, UNESCO World Heritage Site, Wiltshire, England, United Kingdom, Europe

View of Goree Island, UNESCO World Heritage Site, just offshore from, but considered a part of Dakar, Senegal, West Africa, Africa

Courtyard of the Black Eunuchs, The Harem, Topkapi Palace,UNESCO World Heritage Site, Istanbul, Turkey, Europe

Detail of the Erechtheion (Temple of Athena Polias), an ancient Greek Ionic temple on the north side of the Acropolis, UNESCO World Heritage Site, Athens, Greece, Europe

Monastery of Alcobaca, UNESCO World Heritage Site, Alcobaca, Oeste, Portugal, Europe

Church of St. Francis, UNESCO World Heritage Site, Porto, Norte, Portugal, Europe

Aerial of the Guimaraes Castle, UNESCO World Heritage Site, Guimaraes, Norte, Portugal, Europe

Bas Relief of Boats, Tomb of Seti I, KV17, Valley of the Kings, Ancient Thebes, UNESCO World Heritage Site, Luxor, Egypt, North Africa, Africa

Unesco World Heritage Site Monte Alban, Oaxaca, Mexico, Central America, Large stone column in a natural setting under a clear sky, historically significant, Mitla, Central America