Every winter, dozens of otherworldly ice structures sprout up from a rigged up artesian well.

The oldest continuously-operating tavern in Wisconsin used a clever loophole to serve alcohol during Prohibition.

A bizarre house filled with an astounding array of collections.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

France's national museum of scientific and industrial instruments.

This historic, one-acre island is the only legal place to camp in the city of Richmond.

Obscure Freemasons still live in D.C.’s largest private residence.

There's a crumbling old mansion inside the Smithsonian National Zoo.

The oldest continuously operating fish market in the United States.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

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.

Rising out of a clearing in New Jersey's Pine Barrens is an Aztec-inspired monument to the "Lindbergh of Mexico."

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

A farm in New Jersey grew a most unusual crop for AT&T's testing purposes.

Inside Crosswicks Creek Park resides an estate chronicling 200 years of history.

This Great Depression-era creation was once known as the strangest house in the world.

The final resting place of one of the United States's greatest poets.

The first American axe throwing club.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

Dr Barnes' $25 billion private collection of art and arboretum.

This 15-foot tall obelisk commemorating the Philadelphia-Baltimore railroad connection sat neglected for over a century.

One of the oldest log cabins in America is one of the last of its kind this historic Swedish dwelling remains a piece of living history.

This might just be the TARDIS of bookstores.

The tombstone of the founder of the lost town of Ogletown is now stuck inside a traffic median.