The upland areas with their sheep farms and small, stone-walled fields are attractive to visitors, and redundant farm buildings are often converted to self-catering accommodation while the farmhouses themselves supply bed-and-breakfast opportunities. The arrival of the railway on the coast in the mid-nineteenth century opened up travel from Merseyside and caused a boom in tourism, with guesthouses in seaside towns offering board and lodging for the urban visitors. More recently caravan sites and holiday villages have blossomed and there has been an increase in the ownership of "second homes".