Rick Steves' Europe Travel Guide | We get to know North Wales, as we visit the castle-within-a-castle in Conwy, peek into 16th-century domestic life at Plas Mawr, go down deep in the Llechwedd slate mine, and up high in Snowdonia National Park, then stroll through a "Beatle pilgrimage" in Liverpool. © 2006 Rick Steves' Europe