"You have to know how to pace yourself, " said architect and interior designer Beatrice Girelli.

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In most cases, you probably won't need a brand-name architect or interior design firm to build out your center.

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When the existing Tokyo building was deemed too prosaic, too generic, Johansson and architect Andreas Fornell redesigned the interior to resemble a modern Swedish house.

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The firm said it was currently finalising the design for the interior of the power station, based on architect Rafael Vinoly's masterplan.

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"They really wanted an escape, " says architect James Thomas, a Charleston native introduced to them by interior designer Tom Scheerer, who had already created a house for the De Soles in Snowmass, Colorado.

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To keep costs down, Mr. Breaux used an architect only to draw rough plans and he didn't hire an interior designer.

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Although the project's exterior and interior public spaces are Graves-designed, apartment layouts and details are by a relatively obscure contract architect.

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