One of your first stops should be Lewis and Clark National Historic Trail Interpretive Center. Here, you'll be able to orient yourself and pick up some great ideas before you start exploring.
If you're staying a while in Great Falls, Lewis and Clark National Historic Trail Interpretive Center is a good place to kick off your sightseeing. This tourist information center is one of numerous attractions that'll keep you occupied here. Holiday Village Mall, Four Season Arena, and University of Providence are also waiting for you close by.