In the 1850s, the Lake Erie islands were purchased for grape production, giving them their nickname, 'wine islands.' Since the early 20th century the Lonz Winery was a familiar landmark at Middle Bass Island. After the winery closed, the state purchased the complex, which included a marina and acres of undeveloped Lake Erie shoreline. Today, a modern marina offers day-use and overnight boat slips, and a harbormaster building with modern conveniences for visitors.