Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This cabin from the 1850s is one of the first structures built by Chinese immigrants in California.

Home to one of the world’s largest collections of model yachts.

Formerly Fire Station No. 27, the museum is a hidden gem in the heart of Hollywood.

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

Tubing through a cave lit with glowworms is a magical underground experience.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Where manatees are the snowbird vacationers in these balmy Florida springs.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

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

Abandoned in 2009, this once popular resort destination now stands frozen in time.

A unique museum where guests can rent and operate a locomotive.

A spectacular but little-known slot canyon in extreme northern Nevada, with sheer walls nearly 500 feet high and a perennial stream.

A waterfall and cave near Arroyo Seco that inspired the writings of D. H. Lawrence, Willa Cather, and Mabel Dodge Luhan.

A strange sandstone formation in the middle of nowhere presents an interesting climbing opportunity.

A frozen oasis lies beneath the scorching New Mexico desert.

This huge repository of local history housed in an old J.C.Penney's is home to the largest model train set in Southeast Texas.

This beautiful grotto is one of those places where you can't believe you're just outside Austin.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

The famous animator's private station house and man-cave was the birthplace of imagineering.