Portmeirion was designed and built by Welsh architect Clough Williams-Ellis between 1925 and 1975 as a demonstration that landscape need not be damaged by development. The result is a completely invented Italianate village, campanile, piazzas, colonnades, fountains, on a private peninsula above the Dwyryd estuary, surrounded by subtropical gardens. The Prisoner was filmed here.
It sounds absurd because it is, and it is magnificent because of that. The hotel at the centre is worth staying in if the budget allows, dinner by the estuary in a room that looks like it teleported from the Amalfi Coast. Day visitors pay entry and get full access to the village and gardens.