Snowdonia Mountains & Coast Snowdonia National Park, castles, mountains and miles of beautiful coastline. Active in Snowdonia Inspirational ideas to get you active in the Snowdonia National Park. Walks in North Wales Explore the soaring mountains and refreshing coastal walks of North Wales. Family adventure in North Wales Underground trampolines, 100mph zip wires, all-season white water rapids – the North is our adventure centre for thrill-seeking families. Mountaineering Find your Epic on Crib Goch, one of the finest ridge walks in Europe. Kid on a wire Zip World has the longest zip line in Europe, What’s it like to soar 500 feet in the air at 100mph?