A month later, in March 1974, Sentosa Golf Club opened to popular reception despite having the most expensive entrance and membership fees in Southeast Asia at the time.28 Later attractions included the Sentosa Coralarium, whose main feature was an 18-metre-tall coral tower;29 Fort Siloso, which was primed as a historical attraction, following the preservation of its underground tunnels, ammunition bunkers, gun emplacements and searchlight posts;30 a maritime museum; Palawan beach lagoon; and the popular Musical Fountain, which was officially opened in June 1982 and featured synchronised water sprays “dancing” to music.31 Other attractions launched in this decade include the Butterfly Park, Insectarium and the Surrender Chambers – the latter featuring waxworks and exhibits related to World War II in Singapore.