Jean Paul du Ry was a French architect and Huguenot refugee who was responsible for a number of baroque buildings in Kassel, Hesse, Germany.
Karlskirche after restoration
Bellevue Palace in 1742, used as an observatory by Johann Gabriel Doppelmayr
The Ottoneum in Kassel, Germany was the first theater building built in Germany and is now a museum of natural history.
Ottoneum