So, my roleplaying group is about to delve into the world of Mutants and Masterminds. We are playing a group of super villains and our new GM has asked me if I could direct him to where he could find material for battle maps. The last couple of years we've been playing D&D and have gotten used to neat battle maps to play on and he would like to continue that trend even though he is not able to make them himself.

Do anybody have some good links to modern tiles or maps - both buildings and outside - that he can use to make battle maps from? I can teach him to throw a grid on, so no problems on that account