From a lower altitude, you'll get a more nuanced view, all the buildings are clearly visible and, if you watch closely, you can distinguish cars or trains and the city becomes alive.
And the view becomes even more interesting if you zoom in (that's why I always take my long lens when I visit an observatory), virtually descending into the city, so that you can see the passersby, the trees and even the billboards, like in this photo from Ikebukuro (if you wonder, the photo was taken in 2010 and that huge banner is an advertising for one of Nana Mizuki's albums).
EXIF info:
Nikon D90
Lens: VR 70-300mm F/4.5-5.6G
Focal Length: 70mm
Aperture: F/7.1
Shutter Speed: 1/2s
ISO Sensitivity: ISO 200