Immovable individually protected cultural property ADDRESSOpatička 22, Zagreb YEAR OF CONSTRUCTION1247 PROJECT AUTHORZagreb Capitol AUTHOR OF RECONSTRUCTIONaddition of the third floor and observatory, 1903., Vjekoslav Heinzel MGZZVJEZDARNICA The oldest building in Zagreb was built around 1247. It is a property of the Zagreb Chapter located in  Gradec, around which many disputes arose between the Chapter…