Aira Force is a celebrated waterfall on Aira Beck in the Lake District, close to the shores of Ullswater in Cumbria.

The beck drops 65 feet in a single dramatic plunge past ferns and rock into a pool below, cutting through a wooded ravine that forms part of an 18th-century pleasure ground.

The name derives from Old Norse roots, likely referencing the gravelly spit where the beck meets Ullswater. The site, managed by the National Trust, sits within Gowbarrow Park and inspired William Wordsworth's gothic poem "The Somnambulist."

A network of woodland trails winds through quiet glades and past additional cascades along the beck, while a climb to Gowbarrow summit rewards walkers with panoramic views over Ullswater.

Red squirrels inhabit the surrounding woodland, and a 19th-century Pinetum adds further interest to the landscape.