This colonial fort is an intriguing example of Renaissance military architecture.

A glass and sculpture wonderland forms an oasis in a remote part of Kenya.

Strange sandstone canyon known as the "place broken by itself."

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

A salty cave excavated by elephants and the location of a deadly disease vector.

Located in Nairobi National Park, this animal orphanage is the oldest of its kind in Kenya.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

Get tall with nature's lankiest beasts and their warthog friends at this Kenyan preserve.

The innovative Nigerian floating school that may just be a glimpse into the future of design in a world of troubling climate changes.

A labor of love and aviation in Nigeria.

This Nigerian nature reserve is home to the longest canopy walkway in Africa.

The last remaining site of Yoruba worship of the fertility goddess.

A tiny park in the middle of some big power politics.

A small mountain at the crossroads of Turkey, Iraq, and Syria that some believe was the landing point of Noah's Ark.

A surprising and unconventional mosque hidden in the subsoil of Istanbul.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

Climb a set of vertiginous stone steps to the top of this impressive ancient edifice.

This mysterious cliffside carving of an ancient Hittite deity has baffled scholars for centuries.

This hidden gem is bathed in beautiful natural light.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

This shuttered power plant is now Turkey's first industrial archaeology museum.

The best-preserved ancient theater in the world.

This eatery re-creates dishes from the Ottoman Empire so you can dine like a sultan.

This ancient city - home to nine civilizations - is soon to be buried under 200 feet of water.