Nick writes on Here Be Dragons: “I was just playing with multimap.com’s aerial photograph feature, and noticed something I hadn’t seen mentioned on here before — Ordnance Survey map overlays applied dynamically on mouseover over the aerial photo.” Nick’s example. Google may get all the attention (here too, I have to confess), but that’s got to be the coolest integration of satellite/aerial photography and maps that I’ve yet seen.

See previous entries: Toggling Between Maps and Photos; Google Maps Transparencies.