The baroque expansion of Vienna began after 1683. In the 1690s, Johann Adam Andreas von Liechtenstein (1657–1712) had a garden palace built, followed a little later by a new city palace, which was completed in 1712. Both palaces were lavishly decorated with stucco by Santino Bussi. This was during a period of change: stucco ceilings dating from around 1700, influenced by French foliage and scrollwork and containing frescoes and oil paintings, were replaced by ceilings that were entirely covered in frescoes. In the Hercules Hall of the garden palace, the recent existing stucco was removed when Andrea Pozzo was hired (in 1704); he replaced it with the largest ceiling fresco north of the Alps. Elsewhere in the garden palace, the stucco was painted over repeatedly, to such an extent that it was barely legible before its restoration (from 2000 onwards). Through careful cleaning and the application of several layers of transparent lime milk, the stucco was restored to its original delicate state. In the city palace, the stucco work on the second piano nobile was preserved and given colour as part of the extensive modernization that began in 1836 with the aim of surpassing the baroque style with a new neo-baroque idiom. Southern German rococo models (e.g. the Schaezlerpalais in Augsburg) seem to have been the inspiration for this colour scheme. During the recent restoration campaign, baroque stucco ceilings were found in rooms on the first piano nobile (used as a simple office suite) behind suspended ceilings from the 1840s, preserved as if in a time capsule. They were cleaned and retouched; in some rooms, it was even possible to insert the original ceiling paintings by Antonio Bellucci, which had been removed as early as 1807. The subject of this contribution is the restoration of the stucco ceilings in the two baroque palaces of the princes of Liechtenstein in Vienna. These were built for the family at the turn of the seventeenth and eighteenth centuries and are the first and most important examples of the building boom following the ousting of the Turks from Vienna in 1683.