The iconic London Tube Map is endlessly inspirational to other designers. Here's another one for the pile: Tom Carden's "Time Travel Tube Map" uses the Processing visual programming language to warp London into different shapes that display the travel time required to get to any station in the system from one central location. The clever twist is that the "central" station can be any one you choose: the map reshapes itself to focus on whatever point you happen to be at. It's like that old saw: "wherever you go, there you are"--but powered by Java.
Seemingly moments after the first "real" augmented reality app hit Apple's iTunes App Store, more have arrived. One is a London version similar to that first Parist Metro app, and another is from Yelp, the customer-driven business review portal. Both have snuck under Apple's radar.