Kielder is home to England’s largest forest and the biggest man-made lake in Northern Europe. The Kielder website says: "With miles of picturesque walking trails and dedicated off-road cycling, there’s an adventure for everyone – from leisurely family strolls to adrenaline-fuelled rides through the forest. "Known for having the darkest night skies in England, Kielder is a dream destination for stargazers and is home to the Kielder Observatory. "Whether you’re here for a day trip, a weekend break, or an extended stay, there’s something truly special about Kielder." You can try axe throwing, abseiling, and disc golf alongside taking on the high ropes course and Kielder ZipCoaster.