The stunning interior of this Gothic church is covered in ornate gold details.

A hidden three-foot-wide house separates these two regal churches.

A spooky spot along the road where things mysteriously seem to move uphill by themselves.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

A Milanese café entirely designed by the American director Wes Anderson.

Da Vinci's equestrian statue, 500 years in the making.

The world's most active stratovolcano is almost always erupting.

Secret refuge and museum of the Duke of Florence.

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

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Peeing dogs guard the Roman hunting goddess atop a fountain at France’s Château de Fontainebleau.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

The small Scottish townhouse where the "Father of the National Parks" was born.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

These fantastically named natural pools look like something out of a Scottish myth.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.