In Washington, D.C., Burnham did much to shape the 1901 McMillan Plan which led to the completion of the overall design of the National Mall. The Senate Park Commission, or McMillan Commission established by Michigan Senator James McMillan, brought together Burnham and three of his colleagues from the World's Columbian Exposition: architect Charles Follen McKim, landscape architect Frederick Law Olmsted Jr., and sculptor Augustus Saint-Gaudens. Going well beyond Pierre L'Enfant's original vision for the city, the plan provided for the extension of the Mall beyond the Washington Monument to a new Lincoln Memorial and a "pantheon" that eventually materialized as the Jefferson Memorial. This plan involved significant reclamation of land from swamp and the Potomac River and the relocation of an existing railroad station, which was replaced by Burnham's design for Union Station. As a result of his service on the McMillan Commission, in 1910 Burnham was appointed a member and first chairman of the United States Commission of Fine Arts helping to ensure implementation of the McMillan Plan's vision. Burnham served on the commission until his death in 1912.