Even as the Burj Dubai, touted to become the world's tallest building nears completion, plans have been announced for a new kilometre-high tower in Dubai - UAE. The project, inspired by Islamic design and geometry, will be located at the upcoming New Dubai development area near Jebel Ali.

At the core of the Nakheel Harbour & Tower development will come up a tower more than a kilometre high and the world's only inner city harbour. The development will cover an area of more than 270 hectares and become home to more than 55,000 people, a workplace for 45,000 more and attract millions of visitors each year.

Nakheel Tower will have four individual towers within a single structure. A distinctive crescent-shaped podium encircles the base and complements its remarkable height.

The Nakheel Tower is supposed to be finished in 10 years. Until then Dubai already has currently the tallest building with the Burj Dubai which reached 707m in September. It is still under construction.
More details on Nakheel site.