Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

A fascinating insight into daily life in the Eastern Bloc.

One of downtown Berlin's last reminders of its Communist past.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

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

A unique bridge with an equally unique view.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

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

Terrifically morbid cemetary and site of famous Paracelsus' grave.

This strange statue features a bust of the famous composer plopped atop a woman's body.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

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

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

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

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

The beautiful baroque library of the Hapsburg empire.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

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

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.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

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

Chelsea's soldiers were given strict orders when crossing this historic bridge.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."