In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

A surrealist timepiece by the artist of melting clocks.

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

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

The oldest stone house in Paris was built by its most famous alchemist.

The spectacular history of spectacles on display.

This basement museum explores the art and artistry of fascism.

The facade of this bank has changed little over the centuries, including its unique welcome sign.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

This small museum once served as a royal hunting pavilion for King Otto Friedrich Ludwig.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

The largest cactus farm in Africa.

This amazing oasis of art and plants is hidden on the outskirts of Marrakesh.

More than a millennium's worth of municipal records preserve the political history of Austria.

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

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

Handsomely crafted representations of our round planet.

The beautiful baroque library of the Hapsburg empire.

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This gold mine–turned–swimming hole is the perfect summer picnic spot, immersed in nature and history.

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