He is responsible for the growth of Dubai into a global city, as well as the launch of a number of major enterprises including Emirates Airline, DP World, and the Jumeirah Group. Many of these are held by Dubai Holding, a company with multi-diversified businesses and investments. Sheikh Mohammed has overseen the development of numerous projects in Dubai including the creation of a technology park and a free economic zone, Dubai Internet City, Dubai Media City, the Dubai International Finance Centre, the Palm Islands and the Burj Al Arab hotel. He also drove the construction of Burj Khalifa, the tallest building in the world.