A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

A wall of chewing gum moonlights as collective art.

Its 27 graveyards represent the many nationalities and ethnic groups that voyaged to this wilderness in the late 19th century.

An institution that preserves the history of institutionalization.

A simple plaque remembers a California island massacre that claimed more than 100 lives.

A creepy steel gremlin has protected the Bay Bridge since 1989.

These six walrus head statues harken back to a time when this area wasn't far from the oceanfront.

Visible below the waves are memorials to the city's Gold Rush dead.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This massive redwood tree has a hole in the base big enough to drive through.

An optical illusion found amid a logged redwood forest.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

A living time capsule of the 1960s Richardson Bay water-front.

A crumbling Beaux Arts monument to the Bay Area's age of rail.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Giant jewel-toned statues fill the grounds of this Cambodian Buddhist temple in California.

This hidden amusement park is a magical escape for kids and kids-at-heart.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

A collection of haunted objects and macabre oddities under one roof.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

This playground sculpture of an icon from the past is dedicated to the children of the future.

The decorations were inspired by an unlikely missing treasure.