What could be cooler than giant robots smashing each other's faces in? What's that you say? Them doing this in the midst of a city? And perhaps the loser would even crash into a building, demolishing it as it stumbled to its knees?
To facilitate your desire for unnecessarily cinematic destruction, GW has some excellent plastic buildings to accompany their new Adeptus Titanicus game. These little devils are fully modular and infinitely configurable. I went to town on mine and, as you may be able to spot, even converted a couple with some 40k parts. I also injected a bit of variety into their colourways by using different sprays. These were applied from a zenithal angle to get a bit of shading in, which was further enhanced by careful application of Citadel Shades and Washes. I added flock to give the impression that the city is abandoned and overgrown. Clearly the news of the forthcoming titan-brawl scared the residents off some years ago.
Don't forget; home is where the heart is. Even if your heart is buried in a ruin under the giant metal carcass of a Warlord titan.