Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

An open air haven for tropical monkeys in the damp moors of the English country.

This abandoned 19th century orphanage started as a boarding school for children of Civil War veterans.

What was to be the world's most secure Cold War document vault ended up as just a few shallow caves.

This former prison is an Art Deco masterpiece with a past full of civil rights flashpoints.

This Wild West attraction is probably more fiction than history, but that doesn't mean it's not awesome.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

This abandoned Antarctic base sits nearly unchanged since it was forsaken in the 1950s, just waiting for you to visit.

Once America's longest-manned military fort, now an abandoned hulk.

This Scottish manor house is a lush relic from the life of a literary great.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

This grand gothic brewery has been pumping out suds for over a hundred years.

What was once the largest mine in North America has left behind a hollow hill filled with bright blue waters.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

A grove of colossal man-made flowers built to collect the sun's rays.

Free public park and gardens filled with peacocks and peahens.

An emerald-green grotto just a short trip from Austin.

Civil War dumping ground for the bodies of terrorized Union sympathizers.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.