Graz-Karlau Prison Graz-Karlau Prison Graz-Karlau Prison () is located in Gries, the 5th district of the city of Graz, capital of the Austrian state of Styria. With a capacity of 552 inmates, Graz-Karlau is the third largest prison in Austria. Built between 1584 and 1590 in late Renaissance style to designs by Antonio Tade and Antonio Marmoro, it was used as a summer hunting residence for Archduke Karl II of Austria. Originally, it was called "Dobel Castle". The German word "Dobel" is also written "Tobel", a deep, ravine-like valley or can also be a place and field-name. Because the castle's name was
Graz the square of what is now a mental hospital, and succeeded in returning Styria to the authority of the Holy See. Archduke Franz Ferdinand was born in Graz, in what is now the Stadtmuseum (city museum). The more recent population figures do not give the whole picture as only people with principal residence status are counted and people with secondary residence status are not. Most of the people with secondary residence status in Graz are students. At the end of 2016 there were 33,473 people with secondary residence status in Graz. Oceanic climate is the type found in the city,