Look closely and you'll spot the remains of an ancient Roman aqueduct beside this fountain.

An exquisite grouping of structures made from 10 tons of invasive saplings.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

The highest lighthouse in Scotland shines from an abandoned island.

This beautiful site is where the first transatlantic telegraph was sent from.

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

Petrified footprints of one of the very first vertebrates to walk on land.

An eerie collection of the surviving structures from a past celebration of the future.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Despite its grandiose name, this enigmatic first-century void under the town is no cave, and it's possibly not a palace either.

The extensive relics of an ancient Roman and Phoenician fish processing plant hide in a town park.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

One of the world's heaviest musical instruments towers within a popular urban park.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A fascinating insight into daily life in the Eastern Bloc.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

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

This one has sailed five times as far as Sir Francis Drake's famous ship.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

Cliffs full of fossils at the portal to England's Jurassic Coast.

Flaming barrels of tar race through these village streets on Bonfire Night, a tradition that dates back centuries.

This trail follows unique stone railroad tracks and a historic waterway to the south coast of Devon.