The Pension Mozart looks back on almost 100 years of tradition and is today one of the best addresses of international tourism in Vienna. With the Josephine reforms of the year 1797 it is located on the area that spans the present Theobaldgasse. At the beginning of the 19th century the house Theobaldgasse 15 was known as the oldest school of the "windmill". An area in which Ludwig van Beethoven walked regularly. Among the famous residents in the history of today's Theobaldgasse include Joseph Haydn , Mozart Wolfgang Amadeus , Ludwig van Beethoven and Karl Millöcker (1842-1899). From 1908, the composer Erich Wolfgang Korngold (1897-1957), who became famous for his opera "Die tote Stadt", owned and lived in a house in the area. Next to the Pension Mozart there is an impressive staircase called " Fillgraderstiege ", built in the famous secessionist style in the years 1906/07. As well as the alley of the same name, the staircase recalls the bell foundry widow Maria Anna Fillgrader (1763 - 1831), who became known as the benefactor of this region in the history of Vienna. In addition, the "Fillgraderstiege" is also worthy of consideration from an art historical point of view, as it influenced the entire environment in its structural conception and execution. The materials used in the construction of the staircase stone and cast iron were combined in her into a Gesamtkunstwerk.