A once grand hotel is being retaken by the wilderness it once capitalized on.

One of only two remaining Victorian-era greenhouses in New York.

I fought the law and the precinct caved in.

The saddest little diner in New York.

Climb right into the heart of this colorful Iceland volcano.

A glacier pocked with ice caves and surrounded by rainforests.

The deadliest diving spot in the world is also a stunning geological marvel.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This massive water spout has been luring visitors for hundreds of years, some to their death.

This stream-carved gorge has inspired poets, hidden smugglers, and trained soldiers, all without losing its beauty.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

A part of the world's largest marsh seems to be growing bright red Martian grass.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The rusting remains of the largest assembled WWII fleet on the West Coast.

This former luxury resort in Kaua'i is now an abandoned relic.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

This abandoned horse racing track was an exercise in hubris from its inception.

When this test site was abandoned, they didn't even bother to take the rocket with them.

Nature is leading a successful mutiny on this century-old freighter.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

A shady solar power system that couldn't hold up to the harsh desert conditions.