The Lake District is one of the most highly populated national parks. There are, however, only a handful of major settlements within this mountainous area, the towns of Keswick, Windermere, Ambleside, and Bowness-on-Windermere being the four largest. Significant towns immediately outside the boundary of the national park include Millom, Barrow-in-Furness, Kendal, Ulverston, Dalton-in-Furness, Cockermouth, Penrith, and Grange-over-Sands; each of these has important economic links with the area. Villages such as Coniston, Threlkeld, Glenridding, Pooley Bridge, Broughton-in-Furness, Grasmere, Newby Bridge, Staveley, Lindale, Gosforth and Hawkshead are more local centres. The economies of almost all are intimately linked with tourism. Beyond these are a scattering of hamlets and many isolated farmsteads, some of which are still tied to agriculture; others now function as part of the tourist economy.