Henri Matisse's final masterpiece.

An ancient theatre in the "little Rome of the Alps."

Well-preserved, still-functional sliding wood doors from Ancient Rome can be found in this Vesuvius-stricken house.

Pompeii's less famous neighbor is still revealing her secrets.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

A 18th century graveyard and its astonishing cortege of macabre iconography.

A roadway designed for a visiting monarch.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

The most loyal of little dogs, or a Victorian era publicity stunt?

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

360° views of the city plus five floors of optical illusions and hands-on science.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

The heads of two giant mythological water horses honor Scotland's horselord past.

In 1190 one of the worst anti-Semitic massacres of the Middle Ages took place in a wooden tower which previously occupied this site in York.

A dramatic sculpture high up in Yorkshire with vistas on an industrial scale.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

Isaac Newton's former home, where the famous apple tree still stands.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The oldest operating pharmacy in the world features 800-year-old recipes.

Medieval streets buried beneath a papal fortress now form an underground city you can walk through.

A memorial to honor those who were killed in a Bastille Day terror attack in Nice.

This 1920s Dutch barge is now a floating bookstore.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.