Llyn Padarn, Llanberis, Snowdonia, Wales (© Joe Daniel Price/Moment/Getty Images)
From sparkling llyns, mountain hikes, cascading waterfalls to ruined castles, Snowdonia never ceases to amaze. Pictured here is Llyn Padarn, situated near the charming village of Llanberis. At about 2 miles in length and 95 feet in depth, this glacial lake is one of the largest natural lakes in Wales. This example of a moraine-dammed lake has been designated as both a Site of Special Scientific Interest and a bathing water. Whether you're an enthusiast of kayaking, paddleboarding or simply want to immerse your toes in the water, it has your back. In addition, its shores are dotted with remnants of slate quarries, providing a glimpse into the region's industrial past. While you're there, don't forget to explore the nearby Dolbadarn Castle, a historic gem that adds an extra layer of antiquity to your journey.