More than 7, 600 police officers and thousands more troops are set to be deployed in the walled colonial city as part of stepped up security for the summit, which started Monday with a youth conference.

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There are certain Miraval-esque nuances, such as the seven-circuit labyrinth, which Root says was inspired by the cathedral at Chartres, in an area originally slated to be a walled outdoor garden.

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And if the new owners get to feeling cramped, they can always expand--Pulte designs the houses so that a third story or a walled-in patio out back can easily be added.

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The test, in the end, ought to be whether the consumer benefits of a walled garden exceed the consumer costs.

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