Built in 1895 by Viennese architects Hermann Helmer and Ferdinand Fellner, the Croatian National Theatre (Hrvatsko Narodno Kazaliste) sits at the northwest corner of Zagreb's "Green Horseshoe" in Donji Grad. 

Officially opened in 1894 by Austro-Hungarian Emperor Franz Joseph I, this imposing yellow structure in Trg Marsala is a landmark feature in the Lower Town.