Caves famous for the dragon-slaying saint who lived there.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

A gift from Emperor Franz Joseph I to his wife.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

German and American troops joined forces to defend this fortress during the strangest battle of World War II.

The world's largest historic armory was established by independent citizens to defend themselves from the wars of larger forces.

A breathtaking viewing platform over the Alps.

This museum is dedicated to the little known ancient Roman history of Vienna.

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

The amazing wonder cabinets of a very rich Austrian archbishop.

A magnificent collection of imperial armor and weaponry.

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

Visiting this café is like visiting the Austrian grandma you wish you had.

Double spiral staircases are not unheard of, but they are very rare.

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

The Habsburgs' royal collections of art and wonders.

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

A silly medieval mural preserved on the side of a Viennese house.

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

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

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

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

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