City Tower, a symbol of Rijeka and a good example of a typical round tower access-point, which lead into the fortified town. Today it dominates the central part of Korzo, although during its lifetime it was overtopped by more recently constructed buildings.
It was built in the Middle Ages, probably on the foundations of the Late Antique littoral town gates. Some baroque phases of its construction can be seen on the lower part of the front of the Tower, which are characterised by a richly decorated portal, an imperial coat of arms carved out of stone and relief of the Austrian emperors Leopold and Charles VI. Rijeka paid them special respect due to the maritime orientation they introduced into the state policies of the Austrian court. The Tower’s superstructure, on which a city clock has been situated since the 17th century, has been remodelled several times; most significantly at the turn of the 18th century under the guidance of municipal engineer A. Gnamb, the last time was at the end of the 19th century, based on a design by F. Bazarig.
http://www.visitrijeka.eu/What_To_See/Monuments/City_Tower