After placing several shipwrecks on the State Register of Historic Places, the Wisconsin Historical Society has listed a landmark above the water for you to enjoy in Sturgeon Bay.

Earlier this week, the organization listed the Dr. Joseph and Olivia Soper House as one of its latest entries to the Wisconsin State Register of Historic Places. Located on 5th Avenue in Sturgeon Bay, the over 140-year-old Italianate home was added to the register because it is the only residential structure made with Frear artificial stone. According to the Wisconsin Historical Society, the artificial stone was manufactured in Door County by Giles Kirtland, a former superintendent at the Frear Stone Manufacturing Company in Chicago, who purchased the rights to manufacture and sell the product in Sturgeon Bay. Frear stone was used at the Soper House for the block veneer, the drip course above the foundation, window sills, and decorative hoods over the windows, though much of it was replaced with more modern concrete forms a few years later.

Of the more than 2,500 entries listed on the Wisconsin State Register of Historic Places, approximately 80 are in Door County. The Soper House is now one of more than a dozen sites in Sturgeon Bay listed on the register, which includes the city’s post office, former library, and Michigan Street Bridge.