Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

The real life town from the Pied Piper of Hamelin has a mechanical puppet show that retells the famous story many times a day.

A century-long search for a church that was never there.

Constantly maintained, this organ is playing a six-century long composition by John Cage.

"The most colorful grottoes of the world.

The history of German architecture is explored across this fairy-scale mini-city.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

Goethe's "Faust" was inspired by these rock formations known as the "Devil's Pulpit" and "Witches' Altar."

This German museum is devoted to all aspects of grave culture from headstones to coffins.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

Copenhagen's celebrated theme park and gardens.

Hotel designed by indie graphics artists.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

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

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

A beautifully eclectic mix of architectural styles.

Museum preserving torture methods from the past.

Amsterdam's Red Light District leaves little to the imagination.