The site where a plot to assassinate Hitler was planned—and its conspirators were executed—is now a powerful memorial to the German resistance during World War II.

A fascinating insight into daily life in the Eastern Bloc.

Cold war icon and onetime "hole" in the iron curtain.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

This "floating railway" is one of the world's oldest monorail systems.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

Tiny castle in the middle of the Rhine made you pay to pass.

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

1898 German railroad depot museum with working engines, steam train excursions, and hands-on displays.