He was the chief architect of the emperor Ferdinand I in his Inner Austrian domains , and was responsible for setting up the Italian-style modern fortification system in Croatia , along the border with the Ottoman Empire . He planned the town of Klagenfurt , which had been previously been a small settlement donated to the Carinthian estates by emperor Maximilian for their residence . He led the reconstruction of many castles that had been destroyed and frequently only partially rebuilt in the disastrous 1511 earthquake . His work is attested in several Sytrian towns , such as Radkersburg , Maribor and Ptuj
1511 earthquake
1511 Idrija earthquake
Domenico dell'Allio