Castle Drogo given £2.5m Heritage Lottery Fund grant
Castle Drogo, the last castle to be built in England, has been awarded money from the Heritage Lottery Fund.
The castle was built at Drewsteignton, near Exeter, at the beginning of the 20th Century and was taken over by the National Trust in 1974.
The trust has estimated it will cost about £10m and take up to six years to fully protect and refurbish the granite castle
The Heritage Lottery Fund has awarded it a "first-round pass" of £2.5m.
The castle was designed by Sir Edwin Lutyens for the retail tycoon Julius Drewe.
It took more than 20 years to build, but within a few years of its completion in 1931 it began suffering from leaks and damp.
All of the castle's 13,000 window panes need to be replaced.
The problems have been made worse by Castle Drogo's exposed position near Dartmoor.
The National Trust has been selling off sections of the castle's roof to help raise funds.
It hopes to have the preservation project completed by 2016.