The celebrated landscape in northwest England was added to the World Heritage List at a World Heritage Committee meeting in Krakow.
The mountains and valleys of the Lake District were modelled by glaciers in the Ice Age and have since been shaped by an agro-pastoral land-use system characterised by fields enclosed by walls.
A statement from the UNESCO World Heritage Committee read: 'The combined work of nature and human activity has produced a harmonious landscape in which the mountains are mirrored in the lakes. Grand houses, gardens and parks have been purposely created to enhance the beauty of this landscape.
'This landscape was greatly appreciated from the 18th century onwards by the Picturesque and later Romantic movements, which celebrated it in paintings, drawings and words. It also inspired an awareness of the importance of beautiful landscapes and triggered early efforts to preserve them.'