Opening of the Alar-Reinosa railway Historical milestone · Alar del Rey, La Ojeda, Palencia Image of Alar del Rey, not of the place itself. The stretch between Alar and Reinosa of the Palencia to Santander line was inaugurated on 28 March 1857 and was one of the first railway lines in service in Spain, taking over from the canal in the transport of grain. 28 de marzo de 1857 Photo: LBM1948 (CC BY-SA 4.0) What to see and do in Alar del Rey