1331 Maryland Avenue is a new residential building on a prominent site in DC where 14th Street meets the termination of Maryland Avenue. Completing the Portals master plan, it provides 367 market-rate rental units and strengthens the architectural context of the Capital. The building's design adapts the streamlined classical expression of nearby federal buildings while communicating a residential character through strategic setbacks, thoughtfully detailed precast concrete facades, and window compositions that break down the building's scale. It responds to the spatial conditions around its unusual triangular site with a narrow curving facade on Maryland Circle to the east, multi-story bays to the west and north, and a south-facing courtyard that further reduces its mass while increasing the number of units with views of the Tidal Basin. At the roof, an elegant glass-enclosed pavilion houses generous community spaces and amenities, offering 360-degree views over all of DC.