Single runway interrupted by a busy road that cuts across its middle.

One of Warsaw's coolest malls was once a center for anti-Nazi resistance activity.

This doorless 20th-century elevator doesn't stop or slow down.

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

Dr. Farid Mattar's Monument of Peace.

The site of a devastating modern-day mud volcano eruption that buried parts of a village.

A pocket of jungle amidst urban expansion in Panama.

Nature took her revenge on the "Wickedest City in the World."

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

The stunningly blue waters of these beautiful caves also have a violent past.

Fabulous formations, weird and wonderful wildlife.

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

Seven beautiful 1,000-year-old rock-cut Buddhist statues.

This work of engineering is imbued with elegance and ingeniousness.

Stockholm's deepest subway station is also a stunning ecological wonder.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

It houses the remains of a 17th-century version of the Titanic.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Experience what life was like in Ireland during the Viking and medieval ages.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

A countryside Romanian cemetery filled with colorful crosses bearing lyrical, ironic, or satirical rhymes.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

This iconic fortress was once the crown jewel of Haiti's national defense.