Sappada Waterfall is in the heart of Sappada, so why not stop by during your stay. Sappada has other popular natural features you might want to see such as Dolomites.
If museums are on your list of things to see, you might want to browse the collections at Little War Museum in Granvilla. If you want to experience more of the culture Sappada has to offer, head to Sappada Waterfall, Church of Santa Margarita, and Mount Peralba.