One of Edinburgh's oldest pubs hides a 19th-century skittles alley in the back.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

A Nesting Doll of Churches.

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

A snapshot of the city's fascinating voodoo culture.

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

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

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

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

The oldest operating pharmacy in the world features 800-year-old recipes.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This small museum in a 17th-century building honors three iconic Scottish writers.

10,000 flowered plants bloom in the City of Roses.

Delightful disarray of found objects and clutter.

The most loyal of little dogs, or a Victorian era publicity stunt?

A sweet symbol marks the place where torturous executions were once carried out.

A book bound in the skin of an infamous criminal, along with countless other specimens.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

This one has sailed five times as far as Sir Francis Drake's famous ship.