(in the rococo style) were begun in 1760. The new chief designer between 1761 and 1762 was Franz Anton Hillebrandt. A new single floor building for the kitchen, servants and horses was added to the western wall of the castle. Because the water supply for the castle was not sufficient, Maria Theresa had Johann Wolfgang von Kempelen build a special water pipe drawing water from a tank in the town at the Danube bank using pumps. The stairs throughout the castle were rebuilt with a lower gradient, on Maria Theresa's request, to enable her to ride her horse upon them. The result of these changes, as for the exterior of the palace itself and the site gates, was very similar to Bratislava Castle as we know it today. Due to disputes with Hungarian nobles, Maria Theresa did not appoint a palatine, who used to represent the nobles, and instead in 1765 appointed a governor for the Kingdom of Hungary, who obeyed the queen. Bratislava Castle became his seat and the office of the county head left the castle. The second governor was Albert of Saxe-Teschen since 1765, the queen's son-in-law – the husband of queen's favorite daughter, Marie Christine of Austria. Albert and Maria Christine moved to the castle in 1766. Since both of them were promoters of culture and science, the castle and the town became a place of frequent events and visits in the sphere of culture and science. Because the governor did not have enough space, a new palace (later called the Theresianum) was built at the eastern wall of the castle building in 1767 - 1770. It had been designed by F. A. Hillebrandt in the classic style. Its furnishings were very expensive and precious and included hundreds of objects of art. The first floor was home to a family gallery, which later became the basis of today's Albertina Gallery in Vienna. In addition, a winter riding school was added at the northern end of the castle site, a summer riding school was situated directly in the castle yard, both castle gardens were adapted (in the Schönbrunn style), and night lighting using oil lanterns was introduced on the access road to the castle for the first time in history. In 1770, Maria Theresa herself ordered further valuable paintings and furniture to be provided to both the main castle and the Theresianum, and the governor moved into