Twin Cities Live’s Mike Marcotte has a look at what’s happening this weekend.

• ValleySCARE: through October 27th in Shakopee
• Museum Day, presented by Smithsonian Magazine: Saturday, September 21st
  • Minnesota Marine Art Museum, Winona
  • Twin City Model Railroad Museum, Saint Paul
• Get Your Rear in Gear & Tour de Tush: Sunday, September 23rd in Richfield