Ad Deir is a monumental building carved out of rock in the ancient Jordanian city of Petra.
Derinkuyu Underground City is an ancient multi-level underground city of the Median Empire in the Derinkuyu district in Nevşehir Province, Turkey.
Kaymaklı Underground City is contained within the citadel of Kaymaklı in the Central Anatolia Region of Turkey.
Özkonak Underground City is an ancient city built on the northern slopes of Mt. Idis about 14 km northeast of Avanos in Turkey.
One of the most famous sites in the world, Stonehenge is the remains of a ring of standing stones set within earthworks. It is in the middle of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds.