The massive cave church of Cairo's Zabbaleen community is one of the largest Christian churches in the Middle East.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

The remains of a 37,000-year-old prehistoric society were discovered in this mammoth cave, one of the largest in Asia.

The home of Mahatma Gandhi during part of the 21 years he spent living in South Africa is now a guest house.

This oddly shaped building is a surprising Soviet-era crematorium.