Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

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

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

The curiosities and wonders of pharmacy in a delightful historic building.

Sitting in the arguable birthplace of the Wild West, this museum holds the largest collection of bronco busting bric-a-brac in the world.

A museum honoring Oklahoma military service, where you can look into Hitler's mirror and see a Mickey Mouse gas mask.

The surprising home of the iconic Santa Monica Pier Ferris Wheel.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

One of the largest trees of its kind in California.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

Lucha Libre (Mexican Wrestling) themed taco shop.

An inconspicuous footbridge beloved by San Diego locals.

255 feet of suds, scrubbers, and blow dryers.

This historical air terminal in Houston is slowly becoming an aviation museum dedicated to the city's aeronautical history.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

Fantastic collection celebrating the final send-off.