Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

The last of Amsterdam's original sea level markers remaining in place.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

A unique collection of gilded age mechanical pianos.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

This cheese shop also houses a museum devoted to Dutch dairy.

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

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

The attic of a four-century-old canal house hides a clandestine church.

Kwanu'sila the Thunderbird has been silently watching over Chicago for more than 100 years (kind of).

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

Temporary Burning Man sculpture made of two 18-wheelers.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

A professional special effects makeup artist’s collection of horror creatures and one-of-a-kind recreations on display in downtown Boulder City.

An ode to one of the dirtiest jobs during the construction of the Boulder Dam.