Although I don't share the anthroposophic outlook, I am fascinated by the Goetheanum building. Therefore I have taken lots of exterior photographs of this bunker-like structure in different seasons. And I am proud to have received special permission to take some unique photos of the interior. This picture you can explore here.
A great passion of mine are television towers. The Stuttgart tv tower was the first to be built of concrete and steel. With special permission of the public broadcasting corporation SWR, I was able to take some interesting photos of the interior. Look here.