Здание ложи «К трём патриархам», Masonic lodge building in Sovetsk, Russia

The Three Patriarchs Lodge building is an expressionist landmark distinguished by angular geometric forms and a clinker brick facade with decorative details. The structure showcases the style's characteristic sharp lines and functional design elements that remain visible across its exterior surfaces.

The Jewish community of Tilsit commissioned Erich Mendelsohn to build the lodge, and it was completed in 1925–1926. In 1933 the Nazis confiscated it and handed it to the city, later used by a medical insurance fund. It survived World War II and in Soviet times housed the House of Pioneers, renamed the Centre for Children's and Youth Creativity after 1991.

The lodge belonged to B'nai B'rith, the philanthropic order founded in New York in 1843, and its name recalls the patriarchs Abraham, Isaac and Jacob. Mendelsohn had to reconcile three roles in one building: a club for members, a hall open to the public, and a ceremonial space. The upper floor held the club rooms and the lodge hall, while the ground floor was given over to a double-height hall.

The building now houses a center for children and youth activities, making it accessible as a public community space. Visitors can appreciate the expressionist architecture from outside and may enter to see the interior during visiting hours.

The building survived the Second World War intact, but in Soviet times its second-floor terrace was filled in to the roofline and brought under a common cornice. The volumes and the clinker brick exterior finish were kept. From 2010 it held the status of an identified cultural heritage object of Kaliningrad Oblast.