Cat art as far as the eye can see.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

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.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

A haunting collection of the vanished and disappearing natural world.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

A collection of biblical memorabilia.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.