American soldiers discovered Europe's best one-liner at the end of World War II.

This museum promotes informed contraception by documenting its often secret past.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Each year melting snow turns these Austrian hiking trails into scuba zones.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The beautiful baroque library of the Hapsburg empire.

The final resting place for the remains of 143 Habsburg royalty.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

A whimsical bridge adorned with decorative dragons.

This massive subterranean fissure is known as the "underground Grand Canyon."

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

This quiet island in the middle of a bustling city is actually a volcano dotted with Māori ruins.

The most remote tree in the world is more than 170 miles from its nearest neighbor.

This museum/fur store is devoted to educating guests on how awful opossums can be.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

A giant doughnut was given to the small New Zealand town of Springfield to promote "The Simpsons Movie."

Watch the seas clash at the place where according to Maori tradition, the spirits depart for their journey to the afterlife.

Nature's slip and slide.

A lakeside garden in the Southern Alps full of whimsical artwork and thousands of beautiful flowers.

Largest Kauri tree in New Zealand.

This unusual rock formation looks like an apple that has been neatly sliced in half.