BATHED in moonlight, Horton Hall looks every inch the magnificent mansion it used to be. Demolished in 1960, the grand house, in Bradford’s Little Horton, was home to Abraham Sharp, assistant to John Flamsteed, the Astronomer Royal. Sharp had a study above the porch and extended it as an observatory for his telescope. “I painted it in the moonlight because the resident was a famous mathematician and astronomer. The light is on in his study,” says artist Kate Lycett, who captured the long-gone house. Horton Halll is one of a number of lost castles, mansions and grand buildings in West Yorkshire that Kate has brought back to life after painstaking research into their history.