If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

This bridge was constructed from the rubble of the infamous Bastille.

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

This longship was a gift to commemorate the 1500th anniversary of the Anglo-Saxons arrival in England.

Since 1768, the pillar at Guildhall Market in Bath has been a hub of economic transactions.

A shrine to one of England's female saints in what is believed to be her former home.

Trimmings from the record-setting tree line that surrounds Cirencester Park have been used to manufacture chemotherapy drugs.

This gate served as a small lock-up jail in the 14th century.

The world's first consecrated windmill.

It may be a historic 17th-century coaching inn, but the George Inn still functions like a modern pub.

This modest relic, with rich history as a strategic fort through multiple eras.

A beautiful bronze statue of the greatest fossil hunter of the 19th century.

The largest public library in the United Kingdom was designed to reflect the industrial and artistic history of the city where it stands.

Overlooking the seaside town of Margate stands a tribute to an artist's lover.

A unique sculpture park that features the works of several famed artists.

This plaque commemorates an amazing 19th-century sea rescue.

This coin collecting cod is over 130 years old, and the United Kingdom's smallest listed structure.