An idyllic swimming pool tells the tale of Hemingway's trouble with women.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

Historic Hull Street was actually the first street with a proper name in the Boston area.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Soaring over the Niagara Whirlpool since 1916.

Bouncing, delightful, mechanical art at the MIT Museum.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

The rocks in this arid basin leave trails of movement behind them.

100 massive sculptures in the Hudson River Valley.

Narrowest house in Boston.

The oldest operating pharmacy in the world features 800-year-old recipes.

The king of U.S. high points towers over every other peak on the continent.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

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

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

A fantastic castle rumored to be the birthplace of King Arthur.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

This blowhole is supposedly caused by a trapped monster.

Like Mardi Gras, only everyone's a pirate.