From 1919 onwards, Wittgenstein attended the Teacher Training College in Kundmanngasse (formerly Sophienbrückengasse), where he trained to become a primary school teacher.

The college, which still operates today as a College Preparatory School, is located directly next to the Haus Wittgenstein, which Wittgenstein designed from 1926/27 onwards in collaboration with Paul Engelmann for his sister.

The classrooms of the Teacher Training College were located on the second floor, including those facing Geusaugasse – the side from which this photograph was taken.

Sources:

Baumann, X., & Students of the College Preparatory School Kundmanngasse in Vienna. (2023). 1919–1920: “To a teacher’s training college to become a teacher.” In R. Schweitzer (Ed.), Ludwig Wittgenstein’s Tractatus Odyssey: The Great War and the Writing of the Tractatus Logico-Philosophicus (pp. 153–167). DoppelHaus Press.

Monk, R. (1991). Ludwig Wittgenstein: The Duty of Genius. Vintage.