If you ever find yourself in Asgard, the home of Marvel's cosmic Norse gods, your GPS on your smartphone may not work. So you'll need a good map to avoid running into the Destroyer.
Luckily, concept artist Craig Shoji uploaded some stunning Thor concept art recently, which includes this complete city plan of Asgard. There's also some gorgeous looks at the Rainbow Bridge, Heimdall's swords, and some early art showing how Asgard could have looked very different. Shoji also worked on Avatar and Alice in Wonderland, and he gave us some wonderful details about the original designs for the Na'vi and their world.