You should take some b/w pictures during daylight of those enourmous buildings there, would definately make them look great.
Nice pictures!
One question though, these aren't fully scaled pics, right? Since these are 1600×1200.. That's a 2.0 Megapixel camera then. Not the best choice if it's brand new

(no offense)
If not, change the settings, would be a waste of money if you don't use it to the limit