A gothic church spire sits atop this skyscraper, the tallest church in the world.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

This mysterious hill seems to pull objects uphill.

One of the largest collections of merchandise from the famous British sci-fi show can be found smack in the middle of Indiana.

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

This giant disembodied horse head seems to balance impossibly on its nose.

One of the oldest of its kind.

Alexander Hamilton’s creation caused quite a bit of controversy.

This elaborate towering structure was once famed for its revolutionary height.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Time travel with sweets across history at this research-based candy store.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

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

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

Try not to get slimed in Tribeca.