A beautiful but toxic fountain of mercury.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Banksy gives themself artistic license with this piece of London street art.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

On the Irish coast, 18 members of the Howard family are eternally resting in an Egyptian pyramid.

A standing relief of a Norman knight whose posture marks him as a Crusader.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

At this cozy bar tucked down a hidden Galway backroad, Guinness makes the Gaelic come out.