Balboa Park must have more museums grouped in one area that any one single other place in the world (even more than the Mall in D.C.). This was a totally serendipitous find. In fact we were in SD for a conference and just wanted a walk in the park (we know San Diego) when we came upon the Model Railroad Museum. It's terrific fun for young and old. You do have to look for it in the park. It doesn't just hit you in the face.
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