Kutubdia island in best palce for making your next tour. I think it's better than Cox'sBazar.
Baraghop Ershad RPS Cyclone Shelter
Kutubdia (Bengali: কুতুবদিয়া) is an Upazila of Cox's Bazar District[3] in the Division of Chittagong, Bangladesh. The upazila consists of an island in the Bay of Bengal, off the coast near Chakaria, Cox's Bazar.
Nice place for turist.
A remote area in Bangladesh, deprived of optimum development & growth. Upon concentration, this island can be a good source of revenue generation through promotion of its tourism.