This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

A floating cat sanctuary on an Amsterdam canal.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

Plans for this peninsula included houses, the United Nations Headquarters, and a nuclear power plant. When none of them worked out, it became an expansive park.

An anonymous art project beneath Longfellow Bridge where hundreds of trophies line the steel support beams.

A luxury hotel constructed out of a former jail.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

Narrowest house in Boston.

Ornate and macabre headstone in one of the country's oldest cemeteries.

The eccentric mansion of one the most popular horror authors of modern times.

Maine’s only official memorial to the Underground Railroad.

This nature mural exists to protect the surrounding environment and its own canvas from destruction.

The second-oldest garden cemetery in the U.S. was also a college brainstorm spot of Stephen King.

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

This unassuming stone commemorates a condiment factory gone up in smoke.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

This memorial garden is the final resting place of many beloved pets including that of a famous explorer.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

This picturesque abandoned home is rumored to be a spite house.

The grave of Mary Nasson is shrouded by witchy legends.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

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

"Mock all and sundry things, but leave the saints alone."