Thirlmere is a pretty, clear lake with a wooded shoreline and is best enjoyed from the west shore which winds its way through the trees. The views around the lake up to Helvellyn and Dollywagon Pike are impressive.
Thirlmere was once two smaller lakes called Leatheswater and Brackmere. The two lakes were joined by a footbridge until damning in 1879 created a rise in the water levels and Thirlmere was formed as the two lakes overflowed. It now serves as a water supply for Manchester.