A large circus museum with summer performances.

An abandoned water sports stadium that has become a haven for graffiti and decay.

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.

The first declared National Monument in the United States.

A cemetery housing wild west legends in South Dakota.

South Dakota's oldest operating brewery is housed inside a historic firehouse.

Every president in history is immortalized in bronze in downtown Rapid City.

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

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

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

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

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

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

A fitting attraction for the corn capital of the world.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

The remnants of Peoria's proud baseball past stand slightly abandoned, but not forgotten.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

A collection of 11 million buttons illustrates the human toll of the Holocaust.

The site of the climactic scene from the classic horror film is now a historic landmark.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

This isn't your average roadway—it's actually a National Park and a transportation pioneer.