Stereoscopic 3D (the kind with the glasses) is clunky and annoying and doesn't give you much besides a little bit of fake depth, no matter what all of those commercials featuring stuff jumping out of 3D TVs try to get you to believe. Holograms, on the other hand, are serious 3D. We're all waiting on 3D holographic TV, but in the mean time these holographic maps are pretty sick.
Zebra Imaging makes these holographic maps, which don't require idiotic glasses, come in full color, and provide enough detail to see little itty bitty 3D people in an aerial image. Being holograms, you can walk around them to get a 360 degree perspective, and look over and under and around and into things.
It's also possible to embed multiple channels of information in a single hologram, to make images that peel away to show the insides of buildings.
The holograms are created on special film using lasers, and they can be rolled up and even drawn on with markers. Zebra can make them out of just about any kind of 3D data for between $1,000 and $3,000 a pop.