This sundial is located on the courtside of the Long Hallway (Lange Gang). The Long Hallway is the connection building between the Georgenbau and the former stable building. From here, the spectators watched the tournaments in the stable courtyard (Stallhof). [German]
The small inscription tells us: Death is certain but the hour is uncertain (MORS CERTA, HORA INCERTA). A saying you can often see on old sundials.
On the street side of the Long Hallway, you find a mural named Procession of Princes.
Sources / More info
- Dresden Castle (Wikipedia)