For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

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

A mysterious stone embedded at the base of a historic Boston building.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

This parking garage was the site of what was - at the time - the largest cash robbery in history.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

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

A centuries-old church stands as a testament to Boston's "father of architecture."

This ambitious father and son team reigned supreme over the North End, and witches, for many years.

This funeral home had the honor, if that is the correct word, of hosting the funeral of the famous Sacco and Vanzetti.

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

This statue intended for children to enjoy became a minor political spat.

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

Narrowest house in Boston.

This landmark cemetery in Boston was created more than 300 years ago.

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

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

This singular art museum in São Paulo is unique inside and out.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

This mid-century mural portrays humankind's spiritual and scientific journey.

This industrial Art Nouveau gem is a historic hotspot for Mexican counterculture.