If you're spending some time in Tokuyama, Tokuyama Zoo and Shunan City Cultural Hall are top sights worth seeing.
If you're looking for some top things to see and do in Yuno and surrounding area, you can visit Amidaji Temple and Ohirayama Ropeway.
If you're looking for some top things to see and do in Kushigahama and surrounding area, you can visit Shunan City Museum of Art and History and Tokuyama Zoo.
When in Heta, you can plan a visit to Mt. Eigenzan Park and Ohirayama Ropeway, some noteworthy sights in the nearby area.