This skeleton-filled altar piece served as a backdrop to one of the most iconic scenes in "The Sound of Music."

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

Fantastic stories on a miniature railroad.

This 19th century cyclorama acts like an analogue time machine to a different era.

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

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

The amazing wonder cabinets of a very rich Austrian archbishop.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

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

The shell of a medieval fortress offers commanding views of the area it once protected.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

The solemn exterior conceals an opulent interior of this 17th century church.

"World machine" built by an untrained Austrian farmer.

A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

The personal charnel house of Anton Bruckner.

The world's oldest known salt mine.

Dine amidst exotic plants at this former royal greenhouse.

Museum devoted to the artificial language of Esperanto.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

The world's largest collection of intentionally useless inventions.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

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

An exquisite Baroque church in Vienna's old town.