Awesome! Is that a bunch a tarps that are there or was it actually painted on or something? Either way, very cool
The wall of the building is flat and has no windows, but it's also near the convention center. At some point in the past the owners of the (hotel?) thought it would be wise to rent out that huge amount of wallspace.
From what I can tell, what they do is hang an enormous canvas/tarp/sheet of something and then paint the picture by hand with a whole team of people. The tarps have been seen to be re-used, but they don't last forever. Last year the FF tarp was painted over the previous year, but this year it looks like Skyrim gets a fresh one.