Lonely Planet's local travel experts reveal all you need to know to plan the trip of a lifetime in this latest edition of our guide to Wales. Discover Wale's most popular experiences and best kept secrets from gazing out to sea from one of Tenby's glorious golden beaches; to sailing to the remote island of Ynys Enlli, Europe's first International Dark Sky Sanctuary; and exploring medieval Caerphilly Castle to watch historical re-enactments.