This ancient Egyptian obelisk still bears the wounds of World War I.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

The breadfruit-adorned final resting place of the infamous Captain of the HMS Bounty.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

A pair of club-wielding guardians stand watch over London's first public clock to feature a minute hand.

Dictionary Johnson’s favorite feline.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

The giant skeleton sculpture is surprisingly well-traveled.

A map of Italy made entirely of trees.

This network of roads is one of the most unique Etruscan creations ever discovered.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

A Roman temple perched over an Italian town, forgotten several times over.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

Legend said this huge, gnarled tree sheltered the saint during a storm.

Templar knights fleeing persecution are said to have left this sword in stone as a landmark in 1307.

A lonesome Moai stands in a small Italian town some 9,000 miles away from its Easter Island brethren.

A 16th-century horror show built in a lovely Italian garden.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

Was this cave created by Hercules's wrath, the devil, or volcanic activity?

This enormous sinkhole hides a secret world created from divine wrath.

The ruins of this Roman temple dominate the small city in southern Lazio.

This abandoned Brutalist treehouse is a hidden architectural relic.