Physicist’s epitaph provides final confirmation to a career of turmoil.

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

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

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

The topiary maze at the Habsburg hunting lodge.

This cubist Vienna church building looks like some sort of alien stonehenge.

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

This Italian foot path winds through the mountains via 52 individual tunnels.

Hidden behind musical flora and forgotten for over a thousand years, this cave is now a neon dream.

A replica of the Statue of Liberty watches over the tomb of 72 Chinese revolutionaries.

One of the largest caverns in the world has a maw large enough to stack cathedrals in.

World's most expensive home.

The Habsburgs' royal collections of art and wonders.

Site of the 1889 murder-suicide of crown prince Rudolf and his lover Mary Vetsera.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

This former insane asylum now holds a pathological anatomy museum.

The house that took a plunge into the facade of a museum.

Macabre museum devoted to historical Viennese murders.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

A single tree's 2,800 aerial roots give the appearance of a complete forest.

Where giant ships go to die.

This Sumatran root bridge took almost 30 years to knit itself together.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.