The cave where two British judges hid in exile after sentencing the king to death.

These whimsical works of art tell the story of the city's past and present.

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

One of America's most historic homes also holds a startling literary legacy.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

This plaque is dedicated to one-half of the Magliozzi brothers and their hit radio show, 'Car Talk.'

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

The macabre paintings created by famous suicide proponent Jack Kevorkian, or "Dr. Death."

The childhood home of the meat inspector who would become the face of America.

A little Lego easter egg is hidden underwater in the Boston Tea Party tableau at Miniland.

A popular 19th-century natural landmark is now hidden within a sprawling forest.

Try a classic Necco candy bar being resurrected in a small suburban shop.

America's oldest archaeological site or a muddled case of wishful thinking.

It took 275 years and four burials to finally put the Mayflower’s most famous passenger to rest.

Last church of this militaristic WWII style.

The remains of a hospital ravaged by fire, once a progressive place of innovations for disabled children.

The only remaining place where you can play this century-old game for cash.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Small island science organization offers public the chance to participate in research.

This abandoned radar station from the Cold War era now only broadcasts a seriously ominous air of isolation.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.