Framed by one of the best views of the Snowdon Horseshoe, Llynnau Mymbyr is a pair of linked lakes perfect for a quiet day outdoors. The water is usually calm, making it a good choice for paddleboarding, canoeing, or wild swimming. On land, there are footpaths and picnic spots where you can enjoy the mountain scenery. Parking is limited to roadside lay-bys, so it's worth arriving early. With its peaceful setting and shallow shoreline, this is one of Snowdonia's most scenic hidden gems.