Dr. John Miller-Masury House, also known as Lakeside (1906–1935), Crystal Club (1935–1939), and Greystone Manor (1942-present), is a historic home located at Virginia Beach, Virginia. It was built in 1906–1908, and is a 2+1⁄2-story, five-bay, L-shaped stone-and-slate dwelling. It is covered by two hipped roofs with dormers, which intersect at a three-story castellated tower. It has a one-story, deep, wraparound porch. From 1936 to 1939, the building housed the Crystal Club, a gambling casino and nightclub.