Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

100-year-old shipwreck you can walk up to at low tide.

Only known mainland rookery of the threatened Stellar sea lion.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

Hollowed out cedar log tubs set in an ancient towering forest.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

One of the last active volcanoes on the Eastern seaboard.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

Take an otherworldly journey in a school dedicated to out-of-body experiences.

This beautiful architectural gem was the first waste treatment facility in Boston.

A lone gunner's station is all that remains of a replica Spanish Fort in Florida.

The collection of 80+ pieces created between the years 1100 and 1500 is intended to be seen, heard, smelled, touched, and tasted.

The giant squid's 27-foot-long corpse lies preserved within a Sarasota aquarium.

An eclectic treasure trove of maritime marvels.

Human skulls and a stuffed goat made into a rocking chair can be found at this strange little store.

The timeworn "Yankee Stadium" of the fastest game in the world isn't going anywhere.

The futuristic test model of an iconoclastic visionary who wanted to redesign the world.

Though nicknamed the “Russian Freighter,” this ship was actually sunk off the coast of Pensacola by the U.S. government in a top-secret operation.

Wading through a small lagoon reveals a secret, wild stretch of pristine beach.

This Florida arena, once host to "the fastest game in the world," has sat empty for 25 years.

The "worst battleship ever built" is enjoying a grand second act, submerged 30 feet in the Gulf of Mexico.

These crumbling foundations are all that remain of the once-stately 1840s manor that gave the town of Bradenton its name.