Giftshop catering to cryptozoologists and anyone with a sense of humor.

This cemetery is all that remains of a school for "wayward" girls.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

A plaque marks a former safe house on the secret route, now hidden next to a McDonald's.

Once known as the Illinois Asylum for the Incurable Insane.

The mysterious white squirrels of this Illinois city are treated like sacred cows.

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

The palatial McDonald's that inspired Wesley Willis.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

The final resting place of the world's first nuclear reactor.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

The shelves in the back of this thrift store are devoted to saving, not selling, retro tech.

The development and impact of electronic media showcased in a picturesque farmhouse in Maryland.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

A Civil War Museum with some notable medical antiques.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The land is home to swimming ponies and a legendary 18th-century treasure.

A priceless collection of the Nation's cryptologic history.

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

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.