Graz-Karlau Prison serial killer Wolfgang Ott; and the terrorist Tawfik Ben Chaovali, who was involved in the Rome and Vienna airport attacks. 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
Tramway Museum Graz Tramway Museum Graz The Tramway Museum Graz is a transport museum in the Austrian city of Graz, specialising in the history of the Graz tramway network. It is located in the former tram depot at the Mariatrost terminus of Graz tram route 1. The museum houses a collection of some 30 rail vehicles, including motor trams, trailers, works cars, horse cars and funicular cars. While most vehicles are from Graz, there are also exhibits from Vienna, Innsbruck, Dubrovnik and New York. The building housing the museum was originally the depot of the Kleinbahn Graz–Mariatrost, a metre gauge electric railway that