One of the most important yet well-hidden museums dedicated to the history of medicine.

One of seven Jewish catacombs in Rome and one of only two open to the public.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Architectureal fantasy quarter of Rome.

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

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

A quirky and charming restaurant founded by artists.

Visiting this cacophonous collection of vintage novelties is like stepping into the mind of a crazed toymaker.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

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

Beautiful steampunk ghosts of early Massachusetts.

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

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

Impossibly life-like natural history models created out of glass by a father and son.

Three prestigious academic collections come together to create a world-class natural history museum.

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

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

Bouncing, delightful, mechanical art at the MIT Museum.

Painstakingly built dioramas sit unnoticed in a Boston office building.

Dim sum, served in a grand old theater.

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

Located in Faneuil Hall, the headquarters of the Ancient and Honorable Artillery Company of Massachusetts has stood the test of time.

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