The number of days needed to explore North Wales depends on your interests and the depth of experience desired. A minimum of 3-5 days is often recommended to cover the highlights, including attractions like Snowdonia National Park, Conwy Castle, the Isle of Anglesey, and the picturesque town of Betws-y-Coed. However, extending your stay to a week or more allows for a more comprehensive exploration of the region's stunning landscapes, historic sites, and charming villages.