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

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

It has an American Dream Car exhibit, Europe's largest Formula One collection, and many, many mannequins.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

Remnants of a cone-shaped Nazi bomb shelter.

A canopy trail with sweeping views and a giant tunnel slide.

This private museum is packed with 20th-century traffic and technology artifacts.

A team of concrete athletes stands in the middle of a traffic circle.

This 12th-century castle majestically overlooks the city and the beautiful Mosel River valley.

Germany's longest suspension rope bridge.