A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Built to bless whalers before their voyages, this Massachusetts church now features a ship-shaped pulpit.

The vaguely man-shaped root that ate the body of the founder of Rhode Island.

Nine nice parcels of land along a flight path offer a quiet respite... until a plane soars overhead.

No monkeying around, this fountain was really named after the classic sci-fi film.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

The 28-foot granite map plots the locations of 40 theaters in New York City.

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

The site of the deadly Triangle Shirtwaist Factory Fire.

Yo, Adrian!

Take a step into the workshop where Edison and his employees revolutionized the world.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Step inside Lucy, the world's largest "elephant."

The mysterious canine hides atop a drain pipe on the back of the building, some say as a sneaky shoutout to Yale.

Nassau Hall has served as army barracks, a museum, and played a key role in the American Revolution.

Family-run for more than a century, this pizzeria makes a unique mustard pie.

One of New Jersey's oldest surviving buildings still bears the mark of our former British overlords.

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

Destructive children, start your engines.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

A daily replay of the experiment that proved the rotation of the Earth.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.