Burj Khalifa is surrounded by an 11 ha (27-acre) park designed by landscape architects SWA Group.[83] The design of the park is also inspired by the core design concepts of Burj Khalifa which is based on the symmetries of the desert flower, Hymenocallis.[84] The park has six water features, gardens, palm lined walkways, and flowering trees.[85] At the centre of the park and the base of Burj Khalifa is the water room, which is a series of pools and water jet fountains. In addition the railing, benches and signs incorporate images of Burj Khalifa and the Hymenocallis flower.