Hello, i would like to create an iPhone app that shows the map of the United States with annotations in different cities; when i zoom in a zone i would like to see annotations in single places (e.g. i see NewYork:10 pictures, then i zoom in NY and i see 6 annotations in Central Park and 4 in 5th.avenue, for example). Has anyone already made a similar thing (like in iPhone Photo application?)
Thanks in advance and greetings ! c.