The House of Artists and Designers (Dom Artysty Plastyka) in the very centre of the city at Mazowiecka Street is a well-known and widely recognisable building that still bears the marks of the Warsaw Uprising. In the time of the German occupation the building stood next to the pre-war headquarters of the Land Owners Credit Society (Towarzystwo Kredytowe Ziemskie), which had been taken over by the Arbeitsamt – the German labour office. Because of its strategic significance and a strong association with forced labour deportations, it immediately became a priority target for the insurgents.
The first attempt to capture it was made at „W” Hour – in the first moments of the uprising. Platoons 101 and 116 of the Home Army „Bartkiewicz” Group under the command of 2nd Lt Jan “Bohun” Martynkin forced their way through a wall behind the building and took over its courtyard, but were unable to advance from there. The Germans guarding the Arbeitsamt pushed back the enemy troops and fortified their position on Mazowiecka 11.
The second attack took place on the very same day. It was organised by soldiers of the 2nd Platoon, 4th Company under Lt Kazimierz “Rygiel” Pogorzelski. The insurgents attacked the building via its courtyard, passing through a destroyed wall. This time, the attack was successful and the Germans, who had suffered some losses, decided to retreat through Małachowski Square. Members of the insurgency secured 20 rifles, several boxes of ammunition and some German uniforms that day.
Most of the damage done to the building by Mazowiecka 11a occurred on the 22nd of August 1944, when German infantry, supported by tanks, advanced from Małachowski Square and attacked the barricades at the end of Traugutta and Mazowiecka Streets.
On the 7th March 1941, a group of soldiers belonging to the counterintelligence branch of the District of Warsaw, Home Army, executed Igon Sym – the director of Theater der Stadt Warschau during the occupation and a German intelligence agent. The sentence was carried out on the 4th floor of a townhouse opposite the building by Mazowiecka 11a.