The castle still holds traces of the abandoned Roman fort it was built atop.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

This 500-meter-long memorial pays tribute to the hundreds of thousands of lives lost to COVID-19 in the UK.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

Look up from the busy streets to discover how time is kept!

The world's longest continuously running show has played at this small West End theater since 1974.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Giant, friendly pelicans in Central London, the most unlikely of places.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A cluttered and astounding collection of antiquities and curiosities.

Hear the quietest sound from across the dome.

There has been an astronomical clock on this spot since the 14th century.

This statue pays tribute to the iconic musician in the place where he recorded his final studio album.

This 42-foot tribute to the workforce still reminds us to pause and recharge.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

This artistic fountain display pays homage to this area's theatrical history.

The most impressive of Basel's three remaining city gates.