Croatia is popular internationally due to the exotic flair offered by an impressive 1244 islands and islets. Some say that you can get a perfect holiday in this unique area of the Adriatic and the Mediterranean Sea. The Croatan archipelago is the second largest in the area after the Greek archipelago. Some of the best Croatian islands you must visit at least once in a lifetime include Hvar, Vis, Korcula, Mljet, Cres, Pag, and Losinj.