This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

St. Augustine's record-setting narrow street was designed to protect against pirates.

A building so large that it has its own weather.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

A circus legend leaves an unexpected endowment.

It's a pretty creepy lock-up.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Colorado’s most beloved glacier is an imposter.

A once-thriving hotel from the Old West now sits abandoned, under the threat of demolition.

This notorious dive has been serving up both kinds of spirits since 1879.

A picturesque (all-natural!) beach in a landlocked state.

This vintage theme park is peak Christmas kitsch—and it's open all summer.

Once owned by the largest employer in Colorado, these ovens have been abandoned for over a century.

In the 1950s, two women saved this grand theater in the Colorado mountains from demolition.

This open-air reconstruction of an Old West town, a cross between a theme park and a museum, provides an immersive historical experience.

One of the oldest continuously operating amusement parks in the U.S. is an open-air museum of Art Deco and neon lights.

This depiction of the earth mother welcomes new life into Aurora Highlands.

A memorial dedicated to the victims of the Columbine High School shootings.