Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

This huge clock made of flowers and simple machinery was once used a political weapon.

The world's longest known cave system.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

A diorama of the Civil War, fought by cats.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

These giant metal horses graze on a hilltop near the Montana highway.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

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

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

Where the author wrote her beloved "Little House" books.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

European castle ruins in an American state park are actually the product of death and grief.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

A fitting attraction for the corn capital of the world.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

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 monument to the egos of two railroad magnates that fell into decline along with their careers.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.