This historic patch of real estate offers a glimpse of colonial Boston.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

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

This enormous, elaborate tomb looks oddly out of place next to a suburban Edinburgh bowling club.

This tiny island is home to the world's largest colony of Northern gannets.

Atop this arch, during the 16th-century, a sermon was given to those suffering from plague.

The former home of the world-famous Templeton Carpet Factory.

Remnants of the Roman empire's northern frontier nestled in suburban Glasgow.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

The video game-themed street art first popped up in the French city.

A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The first green space constructed on an elevated viaduct.

The oldest stone house in Paris was built by its most famous alchemist.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The lasting remains of a bygone era of open-air meat markets.

A controversial cenotaph dedicated to a local physician with an unscrupulous past.

This statue stands as a message against the ills of Apartheid.

This painting of a beloved dog will be on display at the Scottish National Gallery at long as the museum exists.

A rare remnant of an exposition that took place nearby at the end of the 19th-century.

This historic timepiece was a popular meeting place for romantic rendezvous in the 1960s.

This city square dates back to the Scottish Enlightenment and was home to some of Scotland's brightest minds.