The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

Shoreline strewn with the remains of ghostly fallen trees.

This former coal gasification plant found a curious second life as a popular public park.

Stroll through a wonderland of stupendous moss-covered trees.

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

A cemetery housing wild west legends in South Dakota.

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

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

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

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 first declared National Monument in the United States.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

An experimental, automotive replica of Stonehenge.

A posh members-only club with a literally dramatic history.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

This sprawling bookstore spans four floors and has more than a million books in stock.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

It turns out that a hurricane-prone beach is probably not the best place to house wild animals.

Hundreds of trees made from glass bottles make up this forest on Route 66.

A former utopian healing center created by a huckster and built by derelicts.