Greg Wright's Explorer home screen got lots of attention, and for good reason. Wright's creation is actually even cooler than you might realize, as many of the visual elements are interactive: Tapping the compass opens Google Now; tapping the caliper toggles the notification bar; tapping the lion at the bottom of the map opens a folder of frequent apps; and tapping the date at the top opens the system clock. The paper scroll at the bottom-left, meanwhile, shows a dynamic representation of the phone's current battery level.
Like the last setup, Wright's home screen uses Nova Launcher Prime to accomplish some of its magic. The wallpaper comes from Wallbase.cc; the widgets for the date, time, and battery level were all made using the Ultimate Custom Widget (UCCW) application along with a font called FoglihtenNo06 (Google it and you'll find several sites offering free downloads).
As for the interactive functions, Wright used Nova Launcher to create shortcuts on the spots he wanted and then set their icons to be blank images. That makes it seem like you're tapping the actual map instead of a regular app shortcut.