A Nesting Doll of Churches.

2300-year-old Roman road connecting the empire.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This print shop boasts one of the largest pinball arcades in San Francisco.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

This shop specializes in oddities and Victorian-inspired wonders.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

One of the last remaining movie theatres in the country that features a rear-projection system.

This hidden labyrinth offers walkers some brief peace of mind.

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

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

This is the house that spite built.

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

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

The world's largest piece of copyrighted artwork.

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

Shelves covered in dozens of coffee bean varieties fill this North End institution.

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

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.