An enormous, inside-out glass globe built in 1935.

The longest navigable underground river in the United States is home to countless blind and albino animals.

This restaurant offers a side of antiques, curios, and a bathroom chock full of owls.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

This iconic sluice gate is a favorite haunt for joggers, fishing enthusiasts, and even ghost hunters.

This 700-year-old street food market features baby octopus and soy donuts.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Generations have refused to move this doll from its dusty resting place to preserve a castle from a watery fate.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

The highest peak in the state of Vermont has some interesting features.

A gardener's enduring labor of love is spread throughout a small Vermont town.

The world’s largest underground marble quarry is hiding in Vermont.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

In the early 1800s, surgery was also a show.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Buy a token from the liquor store and you can make this beast spew flames on command.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.