The Pentominium is a skyscraper which is now under construction in Dubai Marina, Dubai. With 516 meters height and 120 floors the Pentominium will be ranked among the highest buildings in the world. It is however smaller than Chicago Spire, the Burj Dubai and the Al Burj, the last two will be built in Dubai as well. The Pentominum will be finished by 2011. The Pentominium was designed by the architect's of AEDAS. It was developed by the company Trident. The Pentominium is going to cost 450 million dollars. The Pentominium will be equipped with Bang & Olufsen audio, Swarovski crystals and Rolls-Royce cars.