A bypass decorated with large wooden troll carvings.

This pebble beach is so beautiful that taking its rocks is against the law.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

As its grandiose name implies, this wooden dome is unsurpassed in size.

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

An angular maze of concrete in Grand Rapids acts both as public art and as a staircase for fish traveling upstream.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

This shallow cave got its name from copious amount of human bones found inside.

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

A museum, walk-through diorama, and library nestled under one castle-like roof.

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

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

An entire city block built completely out of petrified wood.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

A cemetery housing wild west legends in South Dakota.

A fitting attraction for the corn capital of the world.

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

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

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

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.

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