The Nebraska State Capitol is the seat of government for the U.S. state of Nebraska and is located in downtown Lincoln. Designed by New York architect Bertram Grosvenor Goodhue in 1920, it was constructed of Indiana limestone from 1922 to 1932. The capitol houses the primary executive and judicial offices of Nebraska and is home to the Nebraska Legislature—the only unicameral state legislature in the United States. The Nebraska State Capitol's tower can be seen up to away. It was the first state capitol to incorporate a functional tower into its design. Goodhue stated that "Nebraska is a level country and its capitol should have some altitude or beacon effect." In 1976, the National Park Service designated the capitol a National Historic Landmark, and in 1997, the Park Service extended the designation to include the capitol grounds, which Ernst H. Herminghaus designed in 1932. Dimensions and features The structure is anchored by a three-story, square base. This square base houses offices most frequently visited by the public. The second floor (main floor) is home to the office of the Governor of Nebraska, the Nebraska Supreme Court, the Nebraska Court of Appeals, and the Nebraska Legislature. From the center of the base, a tower rises , crowned by a gold-tiled dome. The finial—The Sower and its pedestal—add an additional to the building's height. Common measurements list the capitol at , making it the second-tallest U.S. statehouse, surpassed only by the Louisiana State Capitol (then-Governor of Louisiana Huey Pierce Long insisted the new Louisiana capitol be built taller than Nebraska's.). Goodhue originally envisioned much of the tower to house the collections of the Nebraska State Library, and he planned for each of the tower floors to include glass-floored stacks for book storage. As early as November 1920, however, Goodhue indicated that the tower could serve any purpose, including office space. By September 1925, the Capitol Commission decided that the tower should be built for office space. Tower floors continue to house various offices today. In total, there are 15 stories in the capitol (three mechanical levels also exist within the tower between the 3rd and 4th floors). Memorial Chamber on the 14th floor—the highest publicly accessible level—has four observation decks that offer views of Lincoln from above the ground. Lincoln Municipal Code places height restrictions on structures within the designated Capitol Environs District. This code helps to maintain the capitol's title as