Its easy when you have skylines close together
Here is Coral Gables, Miami and Miami Beach in the background:
http://www.flickr.com/photos/miamiflyme/3041339503/
This great pick my great SSC photo poster QuantumPX has Sunny Isles Beach, Bal Harbour, Miami Beach, and Miami in one pic:
http://www.flickr.com/photos/28404061@N02/5411303683/