The Legislative Chambers are on the fourth floor with their respective public viewing galleries on the fifth floor. The floors between the observation deck and the first five floors are executive and legislative offices. There is a cafeteria on the lower level, a snack bar on the tenth floor, and the Florida Welcome Center just inside the west Plaza Level entrance. Florida Welcome Center staff conducts guided tours for groups of 15 or more and self-guided tours are available during business hours. The Senate office building and the House office building are each four stories high and on either end of Capitol Complex. The bridges on the 2nd and 3rd floors allow people to walk between the Capitol and office buildings. These buildings contain primarily committee meeting rooms and legislative offices. The Knott Building was attached to the Capitol by a skywalk in 1999. The west front is known formally as Waller Park, for Curtis L. Waller, Judge of the United States Circuit Court of Appeals. In 2003, the dolphin statue "Stormsong" by Tallahassee artist Hugh Nicholson was added within Waller Park's Florida Heritage Fountain.