A fiery crater has been burning in the Karakum Desert since 1971.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Rising from the sea like a stone monster.

Eighteen miniature death-scene dioramas.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

A giant Troll lurks under one of Seattle's oldest bridges.

The United States Capitol's former columns still stand.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

America's most famous piece of self-built architecture.

Elevated freight railway turned wildly successful urban park.

Abandoned railway line circling the city of Paris.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

A trash dump made beautiful by nature's power.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Try not to get slimed in Tribeca.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A kaleidoscopic warehouse-maze of handmade neon signs.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.