Aquae Iasae has discovered the ancient spring-fed Roman pool. This pool has the dimensions of 8x13.5 meters and the depth is 2.6 meters. The natural source of the baths' thermal water, was fenced in by large stone blocks. So far, the only similar example of such a pool is known in the Roman settlement of "Aquae Sulis" (Bath) in England. Specific conditions of soil around the springs of water, and travertine deposits, have given rise to good preservation of Roman architecture, so that this complex is one of the best preserved Roman sites in Croatia. Aquae Iasae Aquae Iasae was the Roman
Free Imperial City of Aachen Free Imperial City of Aachen The Free Imperial City of Aachen, also known in English by its French name of Aix-la-Chapelle, was a Free Imperial City and spa of the Holy Roman Empire west of Cologne and southeast of the Low Countries, in the Lower Rhenish–Westphalian Circle. The pilgrimages, the Coronation of the Holy Roman Emperor, flourishing industries and the privileges conferred by various emperors made it one of the most prosperous market towns of the Holy Roman Empire. In 1166, Aachen was given imperial immediacy and declared a Free Imperial City of the Holy Roman Empire by Emperor Frederick