The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Striking, enormous gold-plated sculpture of Buddha installed in the 19th century.

This ambiguous pig shrine is actually a monument to a beloved queen.

The pillars inside this small, ornate shrine hold Bangkok's horoscope within them.

Bangkok's take on the High Line is a park on a traffic bridge above the iconic Chao Phraya River.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

This enormous gold Buddha statue was hidden inside a stucco decoy for centuries.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

Modest but unique pyramid built for a pharaoh has been reduced to a “heap of stone.”

Slum Settlement Filled With Mountains of Garbage.

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

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

Located near Cairo's El Korba district, the abandoned mansion continues to inspire mystery and rumor throughout the city.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Kenyan restaurant is a carnivore's paradise, serving exotic meats at its ultimate 'Beast of a Feast.'

A strangely forgotten claimant to the much contested title of "Source of the Nile."

This small roadside eatery exists in both the Northern and Southern hemispheres, as the equator runs right through it.

One of the most detailed and historically accurate collections of Ugandan artifacts depicting Bahima tribal history, culture, and daily life.

The home of half the world's population of critically endangered mountain gorillas.

Bizarre living fossil only grows in a small chunk of the Namib Desert.

Road signs in Namibia mark the location of one of the five major circles of latitude.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

The only Roman honorific column in Istanbul.