Once the largest public hospital for the mentally ill was also surrounded by controversy.

Most-visited and most-photographed slot canyon in the American Southwest.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

Dramatic river bend surrounds a natural red-rocked pedestal.

A former department store turned into a quirky restaurant.

A simple statue outside a California Amtrak station honors the overlooked contributions of the "silent spikes."

The oldest standing structure in downtown San Diego.

A magnificent, reportedly haunted mansion built for a composer by Spiritualists.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This giant ice cream cone is the last remaining icon of a Salt Lake City staple.

Incredible sculptures inspired by obscure passages from the Bible.

Visitors to this library are in for a real-world education in modernist architecture.

An eclectic collection of artifacts from the Wild West is preserved in a remote fictional pioneer town.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

A technicolor place of worship for Elevationists.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

Pyramid home to an obscure religious group that practices modern mummification.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

The blinking light atop the iconic landmark has been sending secret messages for decades.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.