Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

This candy-colored storybook village originated as a 19th-century Methodist campground.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Historical figures from New York City's Catholic community reside in Midtown.

A bit of retro transportation flair preserved in the world's largest department store.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

The "Seinfeld" diner.

A spiritual vortex among the red rocks in Sedona.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

New England's tallest light house stands on an island with a history of cannibalism and death.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

The unbelievably opulent home built for an infamous newspaperman.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

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

These lush botanical gardens employ the most purrfect pest control force.

Yo, Adrian!

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

It was once the base for a series of domestic terror attacks.

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

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.