Ceremony Time：Need to Request
The Grand Hall is situated on the 1st floor of the chateau and you can enter it directly from the southern gardens via the grand Baroque stairway or from inside the chateau. The painting decorations are the creation of the Dutch painters Abraham and Isaac Godyn 1691-1697 (nearly 1,400 m2 of paintings). Their theme is the celebration of the victory over the Turks at Vienna, which culminates in a tribute to the ruler.
(informations source from Chateau Troja official website)