Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

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

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

This cheese shop also houses a museum devoted to Dutch dairy.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Cat art as far as the eye can see.

A floating cat sanctuary on an Amsterdam canal.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Always a new use for this old building.

An early-19th-century hotel with a past that is steeped in the Civil War.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This pop-culture shop also offers the chance to become part of their favorite tv show or movie.

This rare, carefully curated collection showcases the history of neon inside a grandiose Elks lodge.

This garden is dedicated to a Portland cartoonist who specialized in dark humor.

Journey through a bit of nostalgia inside this classic record and video store.

This hotel has hardly changed in over a century, like a time capsule of old Oregon.

Here, cows that make vodka are treated like celebrities.

The only house in Oregon designed by the famous architect, Frank Lloyd Wright.

This small, rural pioneer cemetery is full of interesting grave markers.

All aboard the world's longest miniature railway.

The largest wooden building in the world now houses a fascinating collection of aircraft.