Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

Lumps of significant stone from around the world surround a flaming monument for peace.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

A second generation sun-powered marvel lights up the night.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

A wall of chewing gum moonlights as collective art.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

A water pumping station disguised as a residential home to assuage concerned neighbors now tricks most passersby.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

Every week, a festive public jam session breaks out in downtown Asheville.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.