This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Once the gateway to the utopian dream-village of a Civil War embalmer.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

Oldest building in California still in use.

This golf ball–shaped former desert real estate office now houses a UFO museum.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

This research center for rare prosimians is studying how they sleep to help prolong human life.

An abandoned, unfinished mansion on grounds strewn with lava rocks.

Golden Gate Park's historic collection of plants.

Come for the speed, leave in love with the desert.

"Only the devil could play golf here."

These curious caverns have been home to mushrooms, gangsters, and disco.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Commonly referred to as the most photographed Victorian home in the United States.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A museum within a museum, devoted to history's most questionable medical devices.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?