Nidderdale was designated an Area of Outstanding Natural Beauty in 1994. The AONB covers a much wider area than Nidderdale. In addition to Nidderdale itself (above Hampsthwaite), the AONB includes part of lower Wharfedale, the Washburn valley and part of lower Wensleydale, including Jervaulx Abbey and the side valleys west of the River Ure. The highest point in the Nidderdale AONB is Great Whernside, 704 metres above sea level, on the border with the Yorkshire Dales National Park.