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by Michael C. Lowe | December 12, 2012

 The Gaithersburg Marriott Washingtonian Center in Maryland is adding a 2,700-square-foot ballroom this coming March. Adjoining spaces will include a 672-square-foot prefunction area and a 2,000-square-foot outdoor terrace. The 284-room property currently offers 7,938 square feet of meeting space.