An ethereal glowing blue ocean cave in Croatia.

Where the lovelorn find a home for their sentimental keepsakes.

A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This German museum devoted to the simple wonders of salt is actually built over an old saltworks.

For centuries, Germans have been dancing in trees.

A simple tribute to the microscopic arachnid that gives its juices and its life to help make a speciality German cheese.

A collection of 4,000 thimbles that's more versatile than one might imagine.

This famed marionette theater and museum is bursting with imaginative string puppets.

A delightful but little-known public observatory and planetarium in Munich.

A modern museum dedicated to the fairytales and dictionary work of the Brothers Grimm.

The difficulty of getting a good night's sleep is an age-old affliction according to the one-of-a-kind Snoring Museum.

Behold, a collection dedicated to Germany's favorite vegetable.

An homage to the humble watering can.

An ancient pagan site swirling with legends in the foothills of Franconian Switzerland.

A museum honoring Germany’s cucumber mecca offers a great dill of gherkin history.

An amusement park on the grounds of an unused nuclear power plant, with a swing ride inside the cooling tower.

A tiny island is connected to the mainland by a private railway that residents travel in their own personal wagons.

A museum dedicated to the silliest fruit.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

King Ludwig I's collection of beautiful women.

Go surfing on this urban wave, "hacked" by local surfers.

Model Trains and Much More in Hamburg.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."