This divisive system of turtle tunnels was built to save animals stranded after a highway split a lake in half.

One of only two pod-shaped homes designed by Frank Lloyd Wright.

View rare birds and interact with lemurs at this nonprofit run entirely by volunteers.

A spooky defunct railroad tunnel now part of a sprawling trail.

Just a man taking his prehistoric pet for a stroll.

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

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

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

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

One man's quest to save his town with a trail of record-breaking sculptures.

An entire city block built completely out of petrified wood.

An ode to South Dakota's state fish.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

Home to part of the world’s largest private collection of original manuscripts and documents.

The watery grave of an impractical idea.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

A collection of 1,300 accordions of all shapes and sizes displayed in chronological order.

The famed architect designed this Minnesota gas station of the future with a lookout tower.