Complex sentence: He invited the architect Max Fabiani to make a new plan of urban development for the town, which included the complete renovation of Prešeren Square and the area around the Tromostovje, which are now considered two symbols of Ljubljana.
Split into simpler sentences: He invited the architect Max Fabiani to make a new urban development plan for the town. This included the complete renovation of Prešeren Square and the area around the Tromostovje, both today seen as symbols of Ljubljana.