Enlli

Enlli - or Bardsey Island if you're old school - sits about two miles off the tip of the Llŷn Peninsula, visible from Pwllheli on a clear day. Getting there means either a boat ride from Aberdaron or, if you're feeling ambitious, tackling the treacherous waters yourself. The island's been a pilgrimage site since medieval times, when monks settled here seeking solitude. These days you'll find the remains of their abbey, a scattering of stone buildings, and an old lighthouse that's done its job since 1821.

It's a walker's destination, first and foremost. The landscape is windswept and dramatic - think rolling grassland, craggy cliffs, and enough birds to satisfy twitchers for days. The crossing alone takes grit; the sea between here and the mainland earned its nickname "the currents of Enlli" for good reason. Once you're there, you've got maybe three to four hours before the tide turns and the boat heads back.

Family groups will find it manageable if the kids are steady on their feet and don't mind cold weather. Young children might find it exposed and tiring. History buffs and serious walkers get the most out of a visit - it rewards curiosity but doesn't hold your hand. The vibe is contemplative rather than touristy, which is precisely why people bother with the journey.

If you're basing yourself at one of the nearby glamping spots - Glampio Coed is excellent, or Treheli Farm for something more low-key - Enlli makes a proper day's outing. Book the boat well ahead. Weather dictates everything up here.