These ruins of an octagonal stone school that was later used as an A.U.M.P. church exemplify a popular school design from the 1830s.

An unusual and eclectic collection of local historical memorabilia.

"The prettiest love letters in the world" ... or so said Lord Byron.

Saint Borromeo often prayed in this austere crypt during the 16th century.

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

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

See what remains of a once grand ancient Roman circus.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

Third time's a charm, or in this case, two testicles are.

The secret medieval communication system will whisk your words above the noise of the crowd.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

A quartet of tiled art pieces adorn the floors of this prestigious art museum.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Created by one of England's most prolific labyrinth designers, inspired by Bath city history.

It houses a menagerie of wondrous taxidermy specimens from around the world, including the remains of a famous gorilla.

Banksy's image of a naked man dangling from the window of a sex health clinic.

The site of Paul Revere's historic two lantern warning.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The Boston square dedicated to the dark poet who was born nearby.