The Colonnade Building is located at 2801 New Mexico Ave NW, 华盛顿市, 哥伦比亚特区 20016, Observatory Circle neighborhood. This 公寓 building was built in 1966 and has a total of 14 floors with. Amenities include Concierge, Doorman, Fitness Center, Lounge 和 Pool. It currently have 22 Active Sales and 1 Active Rentals which can be seen individually below. See other buildings available in zipcode 20016. See all buildings in Observatory Circle.