The Mount Wilson Toll Road (1891–1936) is a historic roadway which ascended Mount Wilson via a vehicular passable road from the base of the foothills in Altadena. It was accessible from Pasadena via Santa Anita Avenue (nowadays the north-south portion of Altadena Drive) which drove right to the front porch of the toll house. The road is still accessible to non-motorized traffic (hikers, bicyclists, and horses) by way of Eaton Canyon (either from the Nature Center entrance, or an access gate on Pinecrest Drive, just off Altadena Drive in Altadena). Segments of it have been closed at various times due to landslides.