The Roman town of Colentum was situated close to where the modern settlement is today, its remains lie at the foot of the hill Gradina. Colentum probably experienced prosperity during the rule of Roman emperors Nero (37 – 68) and Vespasian (9 – 79) whose money was found during the first archaeological researches. The city had the typical Roman architecture, multi-storey buildings, water tanks, thermae and cobbled narrow streets. Archaeologists have discovered luxuriant buildings, most likely villas, terraced down the Gradine hill, with facades facing the sea. It is believed that Colentum was devastated and plundered by pirates at the start of the 2nd century, or that it was destroyed in an earthquake. Although some of the ruins by the coast were rebuilt, Colentum never regained its old glory. The site of the ancient Colentum is now an archaeological park with lookout points, promenades and a one-of-a-kind archaeological beach.