if you want to get the picture, it`s worth the trip. This is good for families, the kids can climb though rocks to get to the tower or take the paved path to it where you can get a 360 view of what is going on in Duluth shore and high bridge. It was fun seeing a ship depart and go under the elevated high bridge-you can get a schedule of what ships are coming and going on the local newspaper, I'm sure there is an app for that too.
They have a Zen Japanese garden and other structures that you will enjoy.
Presently they are repairing the bathrooms so they have port-a potties... which it was the only temporary downside for me. I should have gone before the trip.
Allow 1 hour.