Portals III is an over 500,000-square-foot class A property located at the intersections of Maryland Avenue, SW, 12th Street, SW and D Street, SW. Portals III is one of three office properties located in the complex, along with the Mandarin Oriental Hotel and 1331 Maryland Ave residential complex. Portals III features two distinctive and vibrant lobbies. The main lobby is located on Maryland Avenue, and the secondary lobby is located on the D street side of the building. Each lobby services distinct portions of the building; Maryland Avenue entrance services all floors and tenants located on the west side of the building. The D Street entrance services all tenants located on the east end of the building.