Gowbarrow Fell (Windy hill) is a low fell in the English Lake District. It is an outlier of the Eastern Fells, standing to the north of Ullswater, bounded on one side by Aira Beck with its waterfall Aira Force, a popular attraction for visitors to the area.In previous centuries the fell was part of a medieval hunting-park, Gowbarrow Park, which belonged to the lords of Greystoke.