This shop specializes in oddities and Victorian-inspired wonders.

A 140-year-old castle with underground caves hidden in San Francisco.

A huge musical instrument played by the ocean.

This former lieutenant governor's home is brimming with curiosities.

A more than 260-year-old crypt built on Boston's oldest English burial ground.

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

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

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.

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

The massive machine creates cracking displays of indoor lightning.

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

Narrowest house in Boston.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

The Boston square dedicated to the dark poet who was born nearby.

Two thousand artifacts from around the world collected by one woman who loved to travel.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

A beautiful Victorian-era cemetery, complete with a miniature village.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.