An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

The world's first successful water-powered cotton mill paved the way for the factories of the British Industrial Revolution.

A replica of the famed statue far from home.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

An exquisite Baroque church in Vienna's old town.

At just 51 feet and 10 inches long, it's the shortest street in England.

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

A seaside town with no sea in sight.

This old village lock-up is known as the "round house," but it is actually octagonal.

Climb down into the largest sinkhole in Qatar.

This tiny traditional smokehouse is the only one left in this historic fishing port.

The recreated ruins of a house designed to memorialize a World War I shelling on the town.

These 20-foot jaw bones honor a time when the leviathan bones were a sign that whalers survived the hunt.

A rather grand, but tiny, folly on the banks of the River Wear associated with a Polish count.

Take afternoon tea in a 17th-century almshouse.

This library dates back to the late 17th century and was one of the first public lending libraries in England.

A 600-year-old mini shrine guarded by a sword-wielding knight hides in a crumbling cliff face.

Northern Ireland's Brobdingnagian stepping stones.

This bare, bronze lad in a lone sock sits in the middle of Loughborough’s town center.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.