This subterranean necropolis holds three floors of antler-dug grave caves.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

Ancient mysterious ruts carved in the bedrock.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

The second largest reclining Buddha in the world got "lost" for over 120 years.

Over 2,000 ancient temples dot the Myanmar landscape at the site of this famed archaeological site.

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

A gateway to a mysterious network of underground tunnels.

Massive rock sculptures formed during the time of the dinosaurs still stand undisturbed.

A bright little alley in La Boca is a part of tango history.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

A crumbling cathedral condemned by an earthquake.

Over 4,700 miles of trees being planted to hold back the desert.

An island made out of shells, including a cemetery.

West Africa's largest fishing port honors its artisanal fishing process.

This deceptively salty lake looks like blushing pink lemonade.

This giant statue is the product of a mixture of corruption, Stalinist architecture, and North Korean manpower.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

This abandoned bunker looks out over the Atlantic from its clifftop perch.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

Macabre astrological automaton clock dating to the late 1400s.