In April of 2009, I spent a lovely morning photographing the wonderful early 20th-century friezes of dinosaurs and other prehistoric animals by which decorate the Berlin Aquarium. When the Berlin Zoo added the Aquarium in 1913, Harder was commissioned to paint murals of extinct creatures around the perimeter walls. He also created relief sculptures of some of the animals as well. The main entrance to the new Aquarium is adorned with a life sized Iquanodon sculpture by Harder.