This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

This 13th century Gothic brick castle is the largest in the world by surface area.

This antique thermometer honors the creator of the first universal temperature scale.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

Modern art commemorates one of the first military actions of World War II.

This museum in the tower of the oldest church in Gdańsk, is home to centuries-old time-keeping devices and the world's first pulsar clock.

This Communist-era residential block is one of the longest residential building in Europe.

A haunting deserted hotel is a favorite with artists and photographers.