An artsy hidden staircase leads to breathtaking views of San Francisco.

A huge musical instrument played by the ocean.

The oldest platform carousel built in the United States continues to delight children in Martha’s Vineyard.

This supermarket is suspended 25 feet above an interstate highway.

The world's largest piece of copyrighted artwork.

Oldest church in the United States that is still in continuous use.

A tiny plaque marks the location of the water source that facilitated the birth of modern-day Boston.

Stolen goods adorn the organ at Old North Church.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

This impressive Boston holy house is the American mecca for Christian scientists.

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

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

A mysterious stone embedded at the base of a historic Boston building.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

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

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.