Visit the Atlantis Factory and Museum. Within the Marinha Grande region, a town to the north of Alcobaça, you’ll find the best Portuguese-produced crystal and glassware. (262 540 200. Casal da Areia. Monday to Saturday: 10.30 am, 11.15 am, 12 am, 2.30 pm, 3.45 pm, 5 pm. Closed through August).