Niels Rohweder studied at the København (Copenhagen) Academy of Art from 1924-32 with an emphasis on painting. In between he also attended the Academy of Art in Stockholm where he was taught by Torben Grut, architect of the 1912 Olympic Stadium. During this period, Rohweder also travelled extensively in Europe, including England, Germany, Italy, Poland, France and others. Subsequently he opened his own design studio in København, while teaching classes at the Technical School and the School for Interior Design. During the 1930s and 1940 he designed functional villas, town and country houses focusing on practical design with a view to their locality and proportions. In the 1950s Rohweder designed condominium houses and hotels. He also made illustrations for magazines and books and painted in oils. He regularly participated in art exhibitions, mostly in Scandinavia. The Swimming hall was designed in 1931 for a competition in Berlin at a time when he was still a student.