I just got so excited about stumbling upon brutalist archtiecture in pixel art, haha. excellent subject for isometric work...I like it!

 Thanks for your help on the colors. I never really bothered too much with the pallet, but now after this I find my self constantly keeping at in my mind. I don't know if I will win any of the minimal color awards but it has definatly influenced the way I do my drawing. 

indexing down is a good start, it could probably be further refined to no more than 10 colors with no loss of detail though (through manual palette management)

 Thanks cure, was just eager to get something up on the site already. I indexed the image down to 25 colors. and will update the image 

needs cleanup, I can spot a lot of noise that's driving this past 1700 colors.