Growing up, I was lucky enough to bounce on one trampoline – let alone dwell in a cave full of them! Located in the underground tunnels of Blaenau Ffestiniog, Zip World Bounce Below is lined with 6 different levels of trampolines, each offering a different experience to the visitors. These levels are interconnected through a series of walkways, slides, spirals. It is roughly the size of a large cathedral and was refurbished in 2016 to add 400 square meters to its vicinity. But Zip World Bounce Below wasn’t always the high-flying paradise that stands today – the cavern once housed a Victorian gold mine. If British history, trampolines, and underground cities tickle your fancy, then Zip World Bounce Below is just the destination for you.