Castell Caernarfon

Edward I's crowning achievement in Wales still dominates Caernarfon's waterfront like it did seven centuries ago. The castle's distinctive polygonal towers and banded masonry set it apart from every other fortress in Britain - this isn't your typical Norman keep and bailey affair.

Walking the walls gives you proper views across the Menai Strait to Anglesey, though the real drama happens inside the Eagle Tower. Climb to the top and you'll understand why this became the stage for investitures of Princes of Wales. The medieval toilets built into the walls always get a giggle from younger visitors.

Families will find plenty to explore, though toddlers might struggle with all the steps. History enthusiasts could easily spend half a day here, especially if they take time to read the exhibition panels properly. The audio guide's worth the extra cost if you want the full story.

Coed Helen Holiday Park sits just minutes away, making this an easy day trip without the hassle of a long drive. Several other parks like Morfa Lodge and Plas Coch are within easy reach too. The town itself has decent cafes for lunch, though parking near the castle can be a right pain in summer. Go early or late in the day if you want decent photos without crowds blocking every shot.