Here is an excellent website about the 185 m (607 ft) T1 tower currently under construction in La Défense:
http://www.t1-defense.com/
The website contains stunning renderings of the tower. There are also weekly updates with pictures showing construction progress, as well as lots of information about the tower. The tower is due to be completed in 2007 and opened in January/February 2008.
Just two renderings from the website:
This one shows Paris by night as seen from inside the T1 tower. If you pay attention, you can notice the Eiffel Tower in the distance through the window in the center of the picture.
