Selected dates:
1926
Create a group. The initiators of the Praesens group were mainly graduates of the Faculty of Architecture of the Warsaw University of Technology. Young visual artists also joined them. The group was headed by Shimon Syrkus and Helena Syrkusova was the secretary. In 1928, Praesens became the Polish representative of the Congrés Internationaux d`Architecture Moderne (CIAM).
1930
After the termination of the Praesens group, some of its members formed the group "a.r." in 1931.
1930s
The ideas of the Praesens group were implemented in the residential complex Warszawska Spółdzielnia Mieszkaniowa in Warsaw's Rakoviec district.