Created by Mathew Barrett. Actual title: Future Toronto. It was made mostly with Modo, with some 3D-Coat and Photoshop.
Here’s a quote from Mr. Barrett on Reddit:
“Just to clarify, this wasn’t meant to be about the polar caps melting, though obviously some form of climate change has occurred. If anything I wanted to show some unspecified combination of disasters/changes combined with a century or two of extreme neglect. Maybe the CN Tower was deliberately destroyed, who knows. It was more a matter of fun-trumps-plausibility when I made this image. Any story you want to make up about it is fine with me!”