Old town core (Bazana) was developed underneath the Topana Fortress. In 18th century, during Venetian government, the settlement has started expanding – from the Fortress to the south (to St Francis Church). In this area, four main parallel streets are formed which are connected with a network of stairs and passages. In newer part of the town called Jezero (Lake), the most representative street of Imotski is formed – Piazza. There and on Pazar Street, some of the most representative stone mansions of the town were built in late 19th and early 20th century. In addition to Art Nouveau Benzon Mansion, also the buildings of the Town Municipality, the Court and old Healthcare Centre near Bleu Lake attract the attention. In the south-east part of the town called Đirada, industrial zone was developed. Build in the turn between 19th and 20th century, the tobacco collection station (Dogana) is protected specimen of industrial architecture. Today, there is Regional collection.