Kennedy approved of the idea, and established an informal "President's Council on Pennsylvania Avenue" to draw up a plan. The initial proposal, by architect Nathaniel A. Owings, envisioned a number of massive mixed-use buildings on the north side of Pennsylvania Avenue to complement Federal Triangle but which would also include theaters, restaurants, shops, condominiums, and apartments. The plan called for E Street NW to be buried and turned into a cross-town expressway, a major new plaza to anchor the avenue's west end, new plazas north and south of the National Archives, and a new reflecting pool for the base of Capitol Hill. The plan also envisioned that the proposed National Cultural Center (created by law in 1958) would be situated on the north side of the avenue (on the site of Chase's Theater and Riggs Building), but the location was later changed to the Foggy Bottom neighborhood and it was renamed the John F. Kennedy Center for the Performing Arts.