In this brilliant blue spring in Germany, legend has it that a sad mermaid learned to finally laugh.

At this unusual park, domes, ladders, chairs, and more are made from trees.

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

A small man-controlled waterfall powers an Art Nouveau elevator and is accessed via narrow gauge, solar-powered tramway.

A historic steam train meanders along one of the most scenic rail routes in Germany's Black Forest.

Four-story slides send people whizzing through the math department at this Munich university.

Built to test magnetically levitated elevators, the tower also boasts Germany's highest visitor platform.

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

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

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

Shimmering sea-colored mosaics and Jesus statues cover this opulent building.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

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

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

An old tram depot transformed into a vintage car paradise.

This old wooden funicular railway leads to a cemetery in the forest.

The stones of this formerly witch-obsessed castle were used to build a church.

Crop circles inspired this whimsical garden in Germany.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

A fascinating little museum dedicated to the thousands of chemical substances concealed in our food.

An engineering wonder at Pillnitz Castle protects a precious 230-year-old flowering shrub.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

An ornate century-old elevator still connects the two halves of Bad Schandau.