Cô Tô (island)Cô Tô is an island in Cô Tô special zone, Quảng Ninh Province, Vietnam.OverviewCô Tô is a small island which is a well known tourist destination. Cô Tô has over 4000 in population.BeachesThe island has three beaches – Van Chay beach, Hong Van beach and Bac Van Beach.