This 13th century castle is chock full of ghosts and impossibly rare cows.

A remarkable medieval structure born from a 14th-century disaster.

Long-secret natural history museum, featuring the skull of a "Terror Bird."

A quiet memorial to those who died saving others in the heart of the City of London.

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

An English artist has turned an unassuming ex-council house into a time-lost house of mystery.

Ship-sized kinetic sculptural fantasy.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

A seaside town with no sea in sight.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

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

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

A little slice of Japan and its aesthetics in London's Holland Park.

These ornate arches show how the course of the River Thames has changed.

The medieval woodcut-style artwork chronicles life in medieval London.

A mysterious shape catches the eye in this 16th-century painting.

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

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