House of Grafin Maria Misa von Wydenbruck-Esterhazy (1859-1926).
- Address: Rennweg No. 1A (second floor).
House Wydenbruck – Rennweg No. 1a. To the right Rennweg No. 3 and Rennweg No. 5.
- Rennweg No. 1, No. 3 and No. 5 are designed by Otto Wagner (1841-1918).
Residents
- Rennweg No. 1: Grafin Maria Misa von Wydenbruck-Esterhazy (1859-1926). Second floor, Salon. 1900-1909. No. 1a.
- Rennweg No. 3: Architect Otto Wagner (1841-1918). Later calles Palais Hoyos)
- Rennweg No. 5: Gustav Mahler (1860-1911). No. 5b. Later this address was changed to: 1898-1909 House Gustav Mahler Vienna – Auenbruggergasse No. 2.
