A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

The topiary maze at the Habsburg hunting lodge.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

Legend has it this 11th-century castle was paid a visit from the devil.

This massive library holds what was once the largest book collection in the world.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This museum houses an imposing skeleton army comprised of creatures great and small.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

Handsomely crafted representations of our round planet.

One of Canada's oldest museums, the beautiful Redpath has been serving up Natural History and Ethnography since 1882.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

The massive machine creates cracking displays of indoor lightning.

This lucky bronze frog was gifted to Madrid by a casino.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

"Mock all and sundry things, but leave the saints alone."

A fake Transylvanian castle houses a cathedral of antlers.

One of the now-less-hidden floral gems of the "Emerald Necklace."