Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A six-ton wedding present for the King of the Scots.

The final resting place of soldiers' loyal canine companions.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

One of Ireland's most infamous prisons for rebels including men, women and children.

Climb to the top of the world's largest seated bronze Buddha.

A place to see how French aristocrats lived in the early 1900s.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

Its collection includes a broad array of social, geographic, graphic design, and political history.

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

The Tudor-style cottage in the middle of the square is not quite what it seems.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

Explore nearly 400 years of English middle-class home life.

Collection dedicated to brands, packaging and advertising.

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

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A cluttered and astounding collection of antiquities and curiosities.

Catacombs turned marketplace.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

One part local history, 99 parts gruesome haunted house.