The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

The commemorative stone column conceals a secret laboratory.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

A small store filled with animal skulls and other curiosities.

This gallery is home to everything from antiques, to ancient tribal masks.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

This sidewalk tribute honors Colorado's great culinary creation.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

A downtown park built on top of unclaimed graves.

When this 160-year-old church was being built, a stonemason included a hidden homage to his late daughter.

The clock that sets them all.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This museum offers an actual time machine back through Colorado's past.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

The largest retailer of seashells in the world.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

"We Seceded Where Others Failed."

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.