Saudi Arabia, head of Kingdom Holding Company recently, is planning on building the “Kingdom Tower” in Jeddah which will be 5280 feet high when completed. Designed by Adrian Smith, The tower will stretch one mile up into heavens and include 12 million cubic feet of space, several stories of office space, several stories for a hotel and four tiers of residential space, with the upper most tier reserved for "alternative energy generation" solutions (perhaps including a pendulum to keep the entire tower from collapsing).
http://www.youtube.com/watch?v=j0yDAMt6_3c
