The Building houses two Assembly rooms, and the offices of the President and Prime Minister. This building is the dominant feature of the capitol grounds, with its dome 287 feet (87 m) high, making it the tallest self-supporting masonry dome in the United Commonwealths. A number of features in the structure commemorating the formation of the United Commonwealths. The structure consists of four floors,the first floor is within the raised base and houses offices. The second and