Illenium’s $15M Cherry Hills mansion tops local home sales in December

December’s top sale signaled a changing of the guard in Cherry Hills Village. Nicholas D. Miller — a musician, DJ, producer and songwriter known professionally as — spent $15 million last month to buy a 23,000-square-foot mansion from private equity executive Charlie Gallagher. The eight-bedroom, 14-bath mansion on Cherry Hills Drive sits adjacent to the 10th green at Cherry Hills Country Club. Chicago architect Gregory Maire designed the brick and stone mansion to resemble a 14th-century French country home. Constructed in 1993, the house, with a circular drive, features painted ceilings, plastered walls, eight fireplaces and 18…