The Wielewaal complex, Groningen. The Wielewaalflat, originally called the Martiniflat, is located on the edge of the Oosterpark district. The monument was designed by Groningen architect Frans Klein and was built in the period 1955-1957. It was originally a complex consisting of an apartment building, an office building, a series of retail properties and a smaller residential building. The retail premises and the residential building have been demolished.(c) 17 July 2021 Aerophoto-Schiphol | aerial photo 307598