A floating cat sanctuary on an Amsterdam canal.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's only museum devoted to the wonders of fluorescence.

Where the polar bear watches over everything, and every drink is a double.

A 17th-century bezoar, dirt from an infamous site, and other curios decorate this unusual bar.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

This natural marble cave is one of only five national monuments in Oregon.

Treehouse motel and treehouse-building school.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

The last Americana on Route 66.

Along a California highway is a kind of Jurassic Park made of metal.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

The ghostly remains of an accidental sea.

The ghost town that ended up on Ebay.

One of the ghostly stops along Route 66.

This strangely vacant Western amusement seems to be an empty tribute to residents of Lucerne Valley.

A museum dedicated to the decorative arts from the 16th through 19th centuries.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

A black and white painted wall creates an optical illusion in the California desert.

A giant knight, sex education, date shakes, and Jesus coexist happily in this Coachella Valley desert oasis.

This general store offers visitors a glimpse back into the 1930s.