In 1947 Opatija was given to Yugoslavia as part of the peace treaty with Italy; most of the Italian-speaking population, whose percentage had substantially increased in the past years, emigrated to Italy. In 1963 the Hotel Adriatic, by the architect Andrija Cicin-Sain and his team was completed. Hotel "Adriatic" was the first hotel built in Opatija after the Austro-Hungarian era. The rooms of hotel "Adriatic" have been described as novelties in the hospitality industry. The "Casino Rosalia" was opened in Opatija – the first casino in Eastern Europe. In 1981 the Hotel "Admiral" and marina (200 berths and 40 dry berths) were completed.