River Leven, Cumbria in the context of "Windermere"

Furness (/ˈfɜːrnɪs, fɜːrˈnɛs/ FUR-niss, fur-NESS) is a peninsula and region of Cumbria, England. Together with the Cartmel Peninsula it forms North Lonsdale, historically an exclave of Lancashire. On 1 April 2023 it became part of the new unitary authority of Westmorland and Furness.

The Furness Peninsula, also known as Low Furness, is an area of villages, agricultural land and low-lying moorland, with the industrial town of Barrow-in-Furness at its head. The peninsula is bordered by the estuaries of the River Duddon to the west and the River Leven in Morecambe Bay to the east. The wider region of Furness consists of the peninsula and the area known as High Furness, which is a relatively mountainous and sparsely populated part of England, extending inland into the Lake District and containing the Furness Fells. The inland boundary of the region is formed by the rivers Leven, Brathay and Duddon, and the lake of Windermere. Off the southern tip of Furness is Walney Island, 11 miles (18 kilometres) long, as well as several smaller islands.

Cartmel Peninsula is a peninsula in Cumbria in England. It juts in a southerly direction into Morecambe Bay, bordered by the estuaries of the River Leven to the west and the River Winster to the east. It is, along with the Furness Peninsula, (from which it is separated by the River Leven) one of the two areas of that formed Lancashire North of the Sands, and the better known 'Furness' is often used to describe both peninsulae together. To its north, the peninsula's borders are usually given as the banks of Windermere and the border with the historic county of Westmorland between the Lake and the head of the Winster.

Historically, the area was controlled by the monks of Cartmel Priory. Following its dissolution, much of the local land fell into the ownership of the Preston family at Holker Hall. Through marriage Holker became part of the estate of the Cavendish Family, and today is the home of Lord Cavendish. As well as the estate around Holker, the Cavendish family still owns much of the land of the Peninsula.

Newby Bridge is a hamlet in the Lake District, Cumbria, England. Historically in Lancashire, it is located several miles west of Grange-over-Sands and is on the River Leven, close to the southern end of Windermere.