floor SKY level at , once again giving it the highest observation deck in the world on 15 October 2014, until the Shanghai Tower opened in June 2016 with an observation deck at a height of 561 metres. The 124th floor observation deck also features the electronic telescope, an augmented reality device developed by Gsmprjct° of Montréal, which allows visitors to view the surrounding landscape in real-time, and to view previously saved images such as those taken at different times of day or under different weather conditions. To reduce the daily rush of sightseers, management allows visitors to purchase tickets in advance for a specific date and time, at a 75% discount on tickets purchased on the spot. On 8 February 2010, the observation deck was closed to the public for two months after power-supply problems caused an elevator to become stuck between floors, trapping a group of tourists for 45 minutes. When the tide is low and visibility is high, people can see the shores of Iran (which is around away) from the top of the skyscraper. Burj Khalifa park Burj Khalifa is surrounded by an park designed by landscape architects SWA Group. Like the tower, the park's design was based on the flower of the Hymenocallis, a desert plant. At the centre of the park is the water room, which is a series of pools and water jet fountains. Benches and signs incorporate images of Burj Khalifa and the Hymenocallis flower. The plants are watered by water collected from the building's cooling system. The system provides annually. WET Enterprises, who also developed the Dubai Fountain, developed the park's six water features. Floor plans Ramadan observance On the higher floors, the sun can still be seen for several minutes after it has set at ground level. This has led Dubai clerics to rule that those living above the 80th floor should wait 2 additional minutes to break their Ramadan fast, and those living above the 150th floor, 3 minutes. Construction and structure The tower was constructed by Samsung C&T from South Korea, which also did work on the Petronas Twin Towers and Taipei 101. Samsung C&T built the tower in a joint venture with BESIX from Belgium and Arabtec from the UAE. Turner was the project manager on the main construction contract. Hong Kong-based Far East Aluminum combined to provide the exterior cladding for Burj Khalifa. The contractor and