Rishiricho Museum is 6.6 mi (10.5 km) from central Rishiri, why not stop by during your stay. If you want to experience more of the culture Rishiri has to offer, head to Rishiri-Rebun-Sarobetsu National Park, Minamihama Swamp, and Mount Rishiri.
Sightseeing doesn't mean you have to blow the budget. For some things to do in Rishiri, enjoy the outdoors at Rishiri-Rebun-Sarobetsu National Park or Mount Rishiri.