Explore the iconic 36,000-square-foot mansion built in 1891 for railroad titan James J. Hill. Visitors will marvel at the intricate wood carvings, stained glass windows and other surprises that adorn this gilded age treasure. Guides will immerse guests in the story of James J. Hill, his wife Mary, their 10 children and the domestic staff who worked in the home. Visitors can take a guided tour or explore the home at their own pace. Seasonal walking tours on Summit Ave. and Nooks & Crannies tours are available seasonally and with limited availability.