This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

The heart of a Scottish legend had a centuries-long journey before reaching its final resting place.

His "Lionheart" is entombed separately from the rest of his body.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The great Danube river starts here.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Perhaps the most beautiful of preserved saints, with a little help from Paris.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

The beautiful baroque library of the Hapsburg empire.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This private island is still in the family after a 400-year history including a witch hunt and a pirate.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

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

Go inside the house that inspired L. M. Montgomery to create one of literature's most beloved heroines.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

A faux European lane smack dab in downtown L.A.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

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.

Britain’s longest ancient monument, this great 8th century earthwork was built to mark the boundary between what would become England and Wales.