A sample project for adding animated overlays at points on the map.
iOS7 makes it impossible to add subviews to MKOverlays. This projects is an example of a workaround to allow animated overlays to be added to MKAnnotations.
Adapted from the example below and made to work for iOS7.
http://yickhong-ios.blogspot.com/2012/04/animated-circle-on-mkmapview.html