 Dyffryn House and Gardens underwent restoration in 2006 with a £8 million grant, £6.15 million from the Heritage Lottery Fund, and the Grade II listed Edwardian gardens have been restored to the original design drawn up by Thomas Mawson in 1904 for the coal baron John Cory.The National Trust took over stewardship of Dyffryn House and Gardens on a 50-year lease from the Vale of Glamorgan Council in January 2013.The present Dyffryn House was built in 1893–94 under the ownership of John Cory, by architect E.A.