This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

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

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Tubing through a cave lit with glowworms is a magical underground experience.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The middle finger of modernity.

Architectureal fantasy quarter of Rome.

Breathtaking and huge 430 year old maps of Italy.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Rome’s legendary peephole vista is also a former Crusader stronghold.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Erotic art covers the walls of the largest ancient pleasure palace.

Southern Italy's spinning top village.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

An architecturally unique lighthouse that had to be lifted up and moved to avoid falling in the sea.

The bears of Bern have been a city highlight for over 500 years.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

A former major munitions plant that has been converted into a sprawling art space.

Home to items never before seen by the public.