A crumbling hospital from the 1850s on Roosevelt Island.

A terrific purveyor of natural history objects and curios.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

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

Tucked in the back of this amazing antique store is an important piece of medical history.

The legendary building that needed ghostly approval before being built.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

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

On the Oregon coast there is a natural hole that seems to be draining the sea.

Rippling sand dunes frozen in the Arizona rock.

A magical place that lets you play in and explore the world of Studio Ghibli.

A huge musical instrument played by the ocean.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The world's largest man-made underground caverns offer unparalleled underwater wonders.