- Click on each individual thumbnail image to view a larger image 420 Main Street Winona, Minnesota 55987 Phone: (507) 452-8256 Fax: (507) 452-0939 In 1870, lumber baron Conrad Bohn built his elegant Winona home along with it's grand three story carriage house. Large enough to accommodate six carriages, several horses, a second floor hay loft, and rooms for stable boys, the old Carriage House ...www.chbb.com