Clock Museum - a museum located in one of the oldest houses of Vienna, Obizzi palace in the first district. In May 1917 the City Council took the watch from the collection of Marie von Ebner-Eschenbach, and a high school teacher Rudolf Kaftan (1870-1961). Museum hours, it was decided to set up in the palace Obitstsi, which the city bought in 1901. The museum officially opened on May 30, 1921, showing the townspeople about 8,000 hours.

In the era of National Socialism from Vienna were deported Jews, including the watchmaker Alexander Gross, who amassed a large collection of watches in a small shop on the street Vipplingershtrasse. Gross and his wife emigrated to the United States, his shop was closed. The museum bought the Alexander 70 hours and costs 885 Reichsmarks. During the Second World War, the museum was closed and the collection was moved to the castles in Lower Austria. Some hours had been lost during moving.

Today, the museum exhibits more than 1,000 samples on three floors.

One of the oldest exhibits - the clock tower of the first half of the 15th century. Another important exhibits is the clock of St. Stephen's Cathedral. In addition to the clock tower in the museum presented a fireplace, floor and wall, as well as a large collection of pocket watches. The museum is especially proud of its unique specimens: Cayetano astronomical clock, made in 1769, china grandfather clock famous actress Katharina Schratt. Many hours are still in working condition.