One of your first stops should be Campbell County Convention and Visitors Bureau. Here, you'll be able to orient yourself and get some great ideas before you start exploring.
This Gillette tourist information center is an interesting spot to kick off your day of sightseeing. There's loads to experience in the area, including Rockpile Museum, Gillette Country Club, and Bell Nob Golf Club. Wander around at your leisure at Campbell County Convention and Visitors Bureau before heading to these other fine attractions.