9. Dubai Dubai Towers
Tough economic times have put this project on hold, but when built the Dubai Towers will be at the heart of The Lagoons – a huge construction site spread out over seven islands on Dubai Creek. The towers comprising this project will range from 57 to 94 stories high.
10. Tennessee Signature Tower
A plan which was revamped due to the economic downturn, the design for the original Signature Tower destined for Nashville, Tennessee called for the building to stand 70 stories high and contain a hotel and condominiums in addition to retail and office space. This would have made it the tallest structure in the United States outside of Chicago and New York.