This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

After fleeing the Syrian civil war, chef Malakeh Jazmati began serving exceptional renditions of her homeland's cuisine in Berlin.

The best bagels in Berlin are tucked away in an independent bookstore.

Superb sweets await at the first Jewish bakery inducted into Berlin’s prestigious baker’s guild.

A fascinating insight into daily life in the Eastern Bloc.

Started as a kitchen garden, now the second largest botanical garden in the world.

A slice of central Asia in the middle of Berlin.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

This Parisian café sticks almost exclusively to an ethos of reuse.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

This unattributed sculpture in Amsterdam is hiding in plain sight.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

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

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

A floating cat sanctuary on an Amsterdam canal.

The world's only museum devoted to the wonders of fluorescence.

Museum devoted to the artificial language of Esperanto.

The beautiful baroque library of the Hapsburg empire.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

This 1920s Dutch barge is now a floating bookstore.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.