Steam locomotive 030-0233 Caldas, built 1888 by La Maquinista Terrestre y Maritima (MTM), oldest Spanish-produced locomotive preserved. First used between Barcelona and Sarrià, later between Mollet and Caldes de Montbui (as No. 6), used until 1970 as shunter at Poble Nou depot (Barcelona). Museu del Ferrocarril de Catalunya, Vilanova i la Geltrù, 2026-08-18.