The Upper St. Anthony Falls will be transformed into an interdisciplinary public artwork this weekend for the second annual Illuminate the Lock. With performance, music, and visual projections, the no-longer-operating lock and dam becomes an immersive experience of creative delights. This year’s piece, Returning the River, includes a story written by Molly Van Avery, who will be narrating from a boat in the lock chamber. Ritika Ganguly will sing from a higher location, Dameun Strange will provide the soundscape, and there will be projections on the water created by Mike Hoyt. Just as a warning: This performance isn’t for people who are afraid of heights (though it is all perfectly safe). Regardless, it is pretty darn cool to see this large piece of engineering repurposed for a unique art experience.