The Buddhist temples of Yamadera, built into a mountain side, feature a viewing deck with sweeping views.

Largest graveyard in all of Japan surrounds a famous mausoleum.

Japanese national treasure originally built in 593 CE.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

A little sculpture with a large wardrobe.

Climb inside an iron crystal magnified 165 billion times its normal size.

A whimsical bridge adorned with decorative dragons.

A church of bones, decorated with 40,000 human skeletons.

A pyramid in Central Europe of unknown origin.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

An ornate private entrance to the Vienna subway built specifically for the emperor.

The housing complex served as an anti-fascist fortress during the Austrian Civil War.

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.

Legends surround an ancient tree trunk riddled with nails for good luck.

Dine amidst exotic plants at this former royal greenhouse.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

Baroque celebration of the end of the Great Plague of Vienna.

Op-art architecture designed for happiness.

A spherical "micro-nation" in the heart of Vienna.

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

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

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

An Austrian house of bones filled with hundreds of intricately painted skulls.

The bizarre headgear looks like it was made for a fool, not a king.