The Dubai Tower, known as Burj Dubai prior to its inauguration, is a skyscraper in Dubai, United Arab Emirates, and is the tallest man-made structure in the world, at 829.8 m (2,722 ft). The Tower contains (something like) 900 apartments and over 1000 businesses and this would be a great domain around which to build a directory. – Real Estate Leasing, Apartment Rental, etc. – DubaiTower.org is for sale and listed at Sedo.com.
It is also an “aged” domain, created in October, 2005. Being nearly eight years old will have a small, but positive, influence on SEO.