You can Google to find out where the house is that they used in Purple Rain. Also there are lots of murals around the 'Uptown' area. There's the musical notes mural in a parking lot where Prince did his first professional photographs taken, which is close to First Avenue. There's also the real Lake Minnetonka where you can stick your toe in and be purified, which isn't far from Paisley Park.
I didn't find the right solution from the Internet.