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

In the era of national socialism from Vienna were deported Jews, including watchmaker Alexander gross, who has amassed a large collection of watches in a tiny shop on the street Wipplingerstrasse. Gross and his wife emigrated to the United States, his shop was closed. The Museum bought from Alexander 70 hours for the price of 885 Reichsmarks. During the Second world war the Museum was closed and the collection was moved to the castles in Lower Austria. The clock was lost in the shuffle.

Today the Museum has more than 1000 samples over three floors.

One of the oldest exhibits – clock tower the first half of the 15th century. Another important exhibit is the clock of Saint Stephen's Cathedral. In addition to the clock tower the Museum features a fireplace, floor and wall, as well as a large collection of pocket watches. The Museum is particularly proud of their unique instances: the astronomical clock Caetano, made in 1769, porcelain clock case famous actress Katharina Sratt. Many clocks are still in working condition.