The Nidderdale AONB is an Area of Outstanding Natural Beauty in North Yorkshire, England, bordering the Yorkshire Dales National Park to the east and south. It comprises most of Nidderdale itself, part of lower Wharfedale, the Washburn valley and part of lower Wensleydale, including Jervaulx Abbey and the side valleys west of the River Ure. It covers a total area of 233 square miles (600 km2). The highest point in the Nidderdale AONB is Great Whernside, 704 metres (2,310 ft) above sea level, on the border with the Yorkshire Dales National Park. The only town in the AONB is Pateley Bridge in Nidderdale. Otley and Ilkley lie just to the south of the AONB, and Masham and Ripon are just to the east.