“The house as an object of everyday use” (Lajos Kozma): A plot in a neighborhood once loud with Slovak sounds. A building where challah was baked for Sabbath. People thanks to whom there were overcoats, footwear, oranges and even saddles in the shops. A painfully underdocumented architect. Art Nouveau legacy. The Red Cross and a mystical novel by Sándor H. Hamvas. We will be guided by all these when we uncover the secrets of 17, Szövetség street.