This is what you get when you commission Jason Pearson to draw the climatic scene from Batman: The Dark Knight Returns. He writes,

Here's a commission for a Dark Knight-Batman and Superman piece. I really wanted to do Batman in his normal outfit but when he faces off with the Man of Steel in the finale, he's in his 'Bat Iron Man year one suit'. Then I thought about a comment that Superman said about them being 'Giants amongst men'. And these images came to mind. The city is not really indicative of how Gotham city should look but I wanted a coliseum feel to it. If this was in color, Batman would be colored in a cool, night time theme. Superman- in a sunset theme.

If you look closely at the bottom of each piece, you might recognize the two silhouetted characters in the foreground buildings.