A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

This star-shaped artillery fort protected the mouth of the Thames from the 16th century to the Second World War.

The last resting place of the famous Native American princess is marked by a haunting monument.

A perilous medieval road leading right into the sea.

This charming, narrow-gauge railway in the Thames Estuary is sometimes referred to as the "Train to Nowhere."

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

In 1943 the British military took control of this village, telling residents they had to leave temporarily. The villagers were never allowed to return.

65 million-year-old chalk outcroppings mark the end of the Jurassic Coast.

This multicolored meandering masterpiece is Britain's longest bench.

A motley, fantastical agglomeration of unlikely houseboats along the Shoreham-by-Sea riverbank.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

England's most notorious suicide spot.

Grotto replete with mystical designs laid out in glued shell mosaics.

This abandoned gun tower was built to defend the River Thames from a French naval attack.

Rotterdammers' dirty minds gave this Santa a dirty nickname and cursed it to a life of wandering.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

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.

A giant Troll lurks under one of Seattle's oldest bridges.