Istanbul Sapphire is a skyscraper, and the tallest building in Istanbul and Turkey, located in the central business district of Levent. Istanbul Sapphire was the 4th tallest building in Europe when its construction was completed in 2010. It is the country's first ecological skyscraper. Sapphire rises 54 floors above ground level, and has an above-ground roof height of 238 meters: the building has an overall structural height of 261 meters including its spire, which is part of the design and not a radio antenna. Designed by Tabanlıoğlu Architects, it is a shopping and luxury residence mixed-use development managed by Kiler GYO.