Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

To find the "unicorns of the deep" you've got to go downstairs.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

The elevator hidden in a smokestack on Roosevelt's yacht now serves as a monument to the former president.

The former headquarters of history's oldest megacorporation.

Inside this metro station is a section of the city's former medieval fortification.

Train cars and railroad artifacts abound at this restaurant devoted to railway history.

The tallest monument in a historic New Orleans cemetery was prompted by romance and dash of pettiness.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

Anne Rice, one of the most influential writers in gothic literature, is buried alongside her husband in a New Orleans cemetery.

The only surviving prototype of Buckminster Fuller's revolutionary car.

The arch that celebrated the completion of the Lincoln and Victory highways.

This vast collection of smoking pipes from across the world spans centuries.

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

800 apricot trees honor Silicon Valley's agricultural history.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

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

An exotic wildlife habitat right off The Strip.

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

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

The home used in just a few seconds of film that came to define the setting of a hit sitcom.

Tombstones carved to look like tree trunks are used for multiple generations of family members.

An unknown number of cholera victims are buried in two nondescript graves.

The large rock formation where the Shawnee prophet Tenskwatawa stood and encouraged his warriors during the Battle of Tippecanoe.