The Colonnade Building is located at 2801 New Mexico Ave NW, Washington, 컬럼비아주 20016, Observatory Circle neighborhood. This 콘도미니엄 building was built in 1966 and has a total of 14 floors with. Amenities include Concierge, Doorman, Fitness Center, Lounge 그리고 Pool. It currently have 9 Active Sales and which can be seen individually below. See other buildings available in zipcode 20016. See all buildings in Observatory Circle.