See the magnificience of the Martello Fortress, a colonial heritage that's been standing from 19th century, built for the purpose of protecting and overseeing Onrust Island. With this tour, you can also enjoy the tropical vibes Bidadari Island has to offer by swimming at the beach or at the swimming pool available. Catch fishes while watching the sun set, sip on the delicious complimentary welcome drink by the beach and enjoy your me time to the fullest!