This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

You can soak in three relaxing pools filled daily by the tide.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

Most complete collection of Gymnosperms in the world.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

This ghost town in Belgium will lose its street art when it ceases to exist.

This natural "sea of stones" was once used by the Romans as a quarry.

A German apartment building hosting as many trees as human occupants.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

Cozy basement bar sports an inventory of over 2,000 beers.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.

This bike path traverses the treetops.

This small gallery nestled inside an old botanical glasshouse is a quiet place to enjoy art and nature.

This bike path was sunk below water level for maximum wonder.

This "floating railway" is one of the world's oldest monorail systems.

Incredible labyrinth of man made caves.

This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

A strange rock formation with numerous legends trying to explain it.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

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

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.