This mangled and twisted wreckage left by the side of a Mexican road was no accident, but a planned crash in the name of science and safety.

The tragic death of 19-year-old Mabel Tainter in 1886 led to the construction of this unique Victorian-era theater in the northern woods of Wisconsin.

No one knows the origin of this small town’s unique name.

During the 19th-century, this park was a vital trading fort.

Though it's thrived abroad, this forgotten Dunkin' rival has just one store left in the States.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

This historic sunny-yellow building has an unfortunate connection to the sinking of the Titanic.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

A uniquely lettered street sign marks the corner where the iconic word game was invented.

New York City's smallest piece of private property.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Manhattan's deadly West Side railroad, which killed hundreds of New Yorkers, is remembered by this simple plaque.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.

A dilapidated dock tells the story of Titanic's missed arrival.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Unrepaired walls from a 1920 anarchist bomb attack.

Rummage through this sunken ship, but leave your scuba gear at home.

Harlem park dedicated to compulsive hoarders killed by their own junk.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

A memorial to the first person killed by a motor vehicle in the Western Hemisphere.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.