I'm happy to share with you this free pack of 30 isometric city map elements created by the team at Roundicons...
Isometric Map Icons - Buildings and Places | Buy and Download: http://graphicriver.net/item/isometric-map-icons-buildings-and-places/8081725?WT.ac=category_thumb&WT.z_author=Orange_Box&ref=ksioks
Nice color palette and smooth style on this isometric illustration.
5 City building icons design
Isometric City Map Builder Vector AI & EPS 10 Download by Designers Revolution, via Behance