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

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

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

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

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

A monument celebrating the idea of reaching inaccessible places.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

An important Mayan religious and trading center dating back to 200 BC.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

A true roadside icon standing on the same plains that the herds once roamed.

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

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

One of the first intercontinental ballistic missile sites in the United States.

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

One of America's first dinosaur parks gives a window into Depression-era paleontology.

The first declared National Monument in the United States.

A cemetery housing wild west legends in South Dakota.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

The world's largest Holstein cow.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.