Every day, I walk/bike past the St Hedwig's Cathedral and I see lines of tourists going in. I decided to stop and have a look myself, and was surprised to see that despite the very formal and traditional architecture, the interior is very modern. The foundation was laid in 1740 and the building originally had a wooden cupola that was severely damaged during WWII and is now replaced with concrete segments. I chose this photo for the balance between the lines of the concrete segments and the round balls that comprise the light fixtures that cascade down.