[dgreen]

I'm not sure how good the view is, but I've heard the Washington Monument is visible from the Tower Club at the top of 8000 Towers Crescent (234 ft.). Another 70 feet up should provide some decent views.

Also, views to the west could be nice with the mountains in the distance. I remember seeing a condo for sale in Reston with western views. It was probably about 15 stories high and had nice views of the mountains.