De acordo com o supervisor de SFX do filme, o ILM Ben Snow , a cidade de Sokovia tinha aproximadamente 2 km de largura.
To start with, the city does not exist. “We filmed in several locations in Italy and the UK to cover the ground portions that happened in the street, so that gave us a lot of raw material for the design. But it ended up being one of our largest digital matte painting creations. We had this 2 kilometer expanse of city that we had to build as a digital matte painting, plus the ground that it is sitting on top of, plus the engines that are driving it, complete with the pipes and the infrastructure under the ground with bits of earth falling off it. To get it right we studied landslide footage, building demolition and earthquake footage.”
“So, we had to not only build it as digital matte asset but also lift it out of the ground with the edge of it breaking away and the buildings crumbling like they were in an earthquake. It became a very elaborate process. Our traditional pipeline had been aimed more at single building destruction, like at the end of the Transformers movie. Here we were destroying whole sections of the city. So, we basically built on our pipeline so we could turn a digital matte asset into a generalist asset made in 3DS Max, then we took it through our rigid simulation system and sent it back for rendering in the generalist pipeline.”