The center of the only hemisphere that awards visitors with a commemorative coin.

A roadside spring pooling in an old bathtub where anyone can stop and sip.

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

Despite repeated attempts to make it work, this former mining town is now nothing but dust and memories.

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

A cemetery housing wild west legends in South Dakota.

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

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

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

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

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

This historic theater's pipe organ still accompanies silent films just like it did in 1929.

This beacon for pre-radar pilots once guided Charles Lindbergh to a safe touchdown in Tulsa.

An acoustic anomaly with a mysterious cause.

This old residential building was once the largest flour mill in the world.

The only arched bridge made of stone on the entire Mississippi River.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

Thousands of majestic trumpeter swans fill this park, sounding distinctly like a certain brass instrument.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

The fungus-shaped vintage gas station has served multiple purposes over its lifetime, and now serves ice cream.