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

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

Some of the best pastries in "the Czech heritage capital of Texas" come from a gas station off I-35.

The world-record holder for the longest bridge stretching continuously over water.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

The oldest active mini golf course in the U.S. has an elegant Art Deco style filled with lush tropical plants.

These massive concrete balls were used to mine gold in Virginia.

One of the best examples of Art Deco architecture in the United States.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Washington's iconic carousel has a nice piece of Civil Rights history.

This little museum has an exhibit devoted to the elusive forest denizens.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

An eerie diorama that captures the majestic nature of a few prehistoric-looking beasts.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

255 feet of suds, scrubbers, and blow dryers.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

This massive swimming pool is the high tech home to the human-powered submarine races.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

Man-made geyser that rises to the exact height of the Gateway Arch.

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

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.