Germany’s Volocopter and Saudi Arabia’s NEOM have also set up a joint venture for the project. For some time now, Saudi Arabia has been at the forefront of the world’s megaprojects: the Middle East country has built the world’s tallest clock tower – the world’s third tallest – the Abraj al-Bayt in Mecca, and is also building the monumental Jeddah Tower, which will be the world’s tallest building when completed, at over a kilometre tall.