A zip line stretching 950 metres over Dubai Marina, and has adrenaline junkies queueing up to have their nerves tested. Its creators claim it is the longest and fastest urban zip line in the world. Those taking the plunge can expect to reach speeds of up to 80 kilometres an hour. The attraction, which launched in December 2017, standing at 168 metres high. Crown Prince of Dubai Sheikh Hamdan bin Mohammed Al Maktoum last month posted a video of himself riding the zip line with his uncle. Staff said people pull out at the last minute at least once a week.