This is a great source for a lot of information I've read in bits and pieces in other books. It is well researched and written. Although it does miss some information, it supplies enough to definately illustrate that there was a plan behind the design of Washington, DC. And you don't have to believe in astrology (I don't and I don't believe the author does) to find this book interesting. You just have to understand that the city planners did, or at least found some spiritual sigificance in the imagery of astrology.
Comprehensive in some ways, this book overlooks some of the most dramatic examples of the secrets clearly encoded by the designers of our capital city.