A wonderful collection of all things Oz is nestled in the heart of Kansas.

Journey up the capitol building's cupola for an amazing view of Topeka.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

This 40-foot fowl marks the so-called "wild goose capital of the world."

Undone by Prohibition, this abandoned brewery-turned-flour mill is now ready for its third act.

Concrete strongholds stand guard over the Golden Gate.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A modern mechanical planetary system, part of a 10,000 year clock.

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

A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

A sparse, solitary sequoia still stands as a living tribute to the famous conservationist who planted it—but it's dying.

This 19th century hydroelectric powerhouse was the first of its kind.

This mother-daughter run curiosities shop is a beautifully odd mix of taxidermy and exotic plants.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

The rocks of a certain area of Butte, Montana give off a musical ring when hit.