People come from across the globe to swim in this lake believed to have healing properties.

Site of the greatest known waterfall that ever existed.

"Enter and be entertained or annoyed by Dada in Walla Walla."

An obscure waterfall that looks like something out of a fantasy novel.

An abandoned 19th-century hospital now swirling in ghost stories.

A home made entirely from scrapped, reclaimed and recycled material in Whitman County, Washington.

A nearly abandoned 19th-century town on the Palouse.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

Town of spiritualists and mediums in Florida.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

The ruins of a once-thriving sugarcane plantation that was burned in the Second Seminole War.

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.

An aviation relic that made coast-to-coast travel possible.

Despite being made of a seashell mortar, the crumbling remains of this historic Florida mill are still standing.

These mysterious ruins are hidden amid this sleepy coastal city.

A swamp that was the site of prehistoric water burials also managed to preserve its corpses for millennia.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

Believed to be haunted, this old cemetery is beautifully adorned with Spanish moss hanging from the trees.

This small island was the first National Wildlife Refuge ever created in the United States.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Off the Florida coast, a whimsical world of marine sculptures are revitalizing coral reefs.

In memory of the 110 victims of ValuJet Flight 592 that crashed in the Everglades.

This beautiful Miami garden was designed as a laboratory for tropical plants.