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

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

A cemetery housing wild west legends in South Dakota.

A fitting attraction for the corn capital of the world.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

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

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A bizarre roadside attraction and the first instance of miniature golf in the world.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The first declared National Monument in the United States.

This historic train station has been converted to a locomotive themed hotel.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Enormous lake at the bottom of a unique cave system.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Strange physical sensations and optical contradictions keep visitors coming back for more.

Island where motor vehicles are banned -- home to the only carless highway in the United States.