The National Farmers' Bank of Owatonna, Minnesota is a historic bank building at Broadway and Cedar Streets. It was designed by Louis Sullivan with decorative elements by George Elmslie. It was built in 1908, and was the first of Sullivan's "jewel boxes". The building is clad in red brick with green terra cotta bands, and features two large arches on its street-facing facades. Single-story wings, originally housing bank offices, extend along each side. Internal elements include two stained-glass windows designed by Louis J. Millet, a mural by Oskar Gross, and four immense cast iron electroliers designed by George Grant Elmslie and cast by Winslow Brothers Company (owned by William Winslow, for whom Frank Lloyd Wright designed an iconic house).