Sister City Golden Anniversary. May 7 – August 31. A celebration of the 50^th anniversary of Frankenmuth’s relationship with Gunzenhausen, Germany, Frankenmuth’s sister city. Frankenmuth Historical Museum, Frankenmuth; 989-652-9701, www.frankenmuthmuseum.org

Art in the Heart of the City Art 4 All Exhibition: Deanna Bergman, Alma Cooke, Nicole Kamidoi, Stacie Rose, and Jan Wegner. May 18 – July 8. Admission fee. Works by Michigan and Great Lakes Bay Region artists. Saginaw Art Museum, Saginaw; 989-754-2491, www.saginawartmuseum.org

Exhibit: Works by 2011 – 2012 BAA/BA/BS Graduates of the Department of Art & Design. May 25 – July 21. University Art Gallery, CMU, Mt. Pleasant; 989-774-7457, www.uag.cmich.edu

Sanford Centennial Museum. Open weekends, Memorial Day through Labor Day. Free admission. Features a “big wheel” log carrier and nine historic buildings, including two schools, a general store, log cabin, township hall, church, train depot, and train, all authentically restored and furnished. Sanford Centennial Museum, Sanford; 989-687-9048, www.sanfordhist.org

Hands-on Gallery: Amazing Architecture: Frank Lloyd Wright. Through June 8. Admission fee. Design and math-related exhibits and educational art activities. Learn about architectural treasures from the Great Lakes Bay Region. Saginaw Art Museum, Saginaw; 989-754-2491, www.saginawartmuseum.org

Exhibit: Tom Phardel and Sharon Que - A Three Dimensional Perspective. Through May 26. Free admission. Marshall M. Fredericks Sculpture Museum, Saginaw Valley State University, University Center; 989-964-7125, www.marshallfredericks.org

Saginaw Township Annual State of the Arts Exhibition. Through May 25. Monday – Friday, 8 a.m. – 5 p.m. Free admission. Juried exhibition of Michigan artists. Saginaw Township Hall, Saginaw Township; 989-791-9800, www.saginawtownship.org