Drink and dine in a coral cave that's at least 120,000 years old.

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.

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

This tourist village in Nairobi celebrates the traditional lifestyles and customs of Kenyan tribes.

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

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

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

Sloth rehabilitation center in the jungle of Costa Rica.

A bizarre house filled with an astounding array of collections.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

When it opened during the final years of the embargo, all the drinks and cigars were free.

The blinking light atop the iconic landmark has been sending secret messages for decades.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A Spiritualist house of worship where believers communicate with the dead in the spirit world.