High Quality Content by WIKIPEDIA articles! Walmoor Hill is a large house in an elevated position overlooking the River Dee on the west side of Dee Banks, Chester, Cheshire, England (grid reference SJ420657). IT is a Grade II listed building. NIkolaus Pevsner in the Buildings of England series describes it as a "house of considerable panache".THe house was built by the Chester architect John Douglas for his own use. IT was built in the 1890s and, although bearing the date 1896, its service wing was never completed. BEcause of its large size and prominent position it was popularly known as "Douglas' Castle" or "Douglas' Folly".