Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

An astounding collection of medical specimens, including bits of President Lincoln.

100 years later, they're still down there.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to a vast and influential collection of Shakespeareana.

The narrowest house in America is seven feet of pure spite.

Once forgotten and built over, this historic Black cemetery now houses a poignant memorial.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A psychedelic labyrinth on the San Francisco bay.

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

Most-visited and most-photographed slot canyon in the American Southwest.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

This museum looks at the history of one of America's most famous prisons and most beloved albums.

The final resting place of New Orleans' most famous voodoo priestess.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

World's largest collection of serial killer artwork and other macabre exhibits.

Rippling sand dunes frozen in the Arizona rock.