Park Avenue-style perfection in the heart of Kalorama! Welcome to 2540 Massachusetts Avenue NW, one of Washington's most distinguished cooperative apartment communities. Designed by Architect Harry L. Edwards and opened in 1926 as the "Army and Navy" cooperative (owing to the large number of military officers who were among the original unit owners), the building is featured in James M. Goode's "Best Addresses" under its original name. Since the "Army and Navy" moniker caused some confusion due to its similarity to the Army-Navy Club, the building's street address eventually became the coop's official name. Over the decades, 2540 has been home to senior-level government officials, writers, university presidents, business leaders and accomplished professionals in a wide range of disciplines. The timeless elegance of the building and its prestigious location on Embassy Row continue to attract discerning homeowners who value the coop's aesthetic charm and its convenience to galleries, mu