Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.

Three hundred years of preserved Spanish colonial history in San Antonio.

Ruins of a once-opulent grand Victorian resort.

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

The highest bridge in America was built for an almost unnervingly small amount of money.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

This phone booth-sized municipal building has been a piece of police property for more than half a century.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

"We Seceded Where Others Failed."

Bat house that has only ever housed bat for one night; they all flew away and never came back.

The largest freshwater lake in the Florida Keys.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

Where monkeys run wild and the humans are caged.