La Posada, Winslow, AZ. Aug. 1992. At the time this photo was taken, La Posada was an Indian Health Services facility, and still housed BNSF Railway offices. La Posada lies between Route 66 to the north and the BNSF in the south. La Posada is a Mary Coulter designed hotel built for the Fred Harvey Company beginning in 1928 and opened to the public in 1930.