Q. What happens when you take cross-product of Wikipedia and Google Maps?
Wikiesque effort for tagging cities, helpful for Indian cities where Google Maps are not available (and high-resolution images for few major cities). You can search and tag your places here and even put it on your page (Shown below is my office, Read-Ink technologies).
Few other Bangalore landmarks :
Riya Photo Search uses similar tagging technology for location-wise photo search.
(Link via Rupesh)
Update: It does work in Firefox :)