A dozen trails are outlined on the free Dolenjske Toplice Municipal Tourist Trails handout, but without any explanatory detail. You need to ask at the TIC for more detailed information – it has some two dozen separate sheets with themed hikes, walks and cycle routes.
One is a 2.5km archaeological walk west to Cvinger (263m), where Hallstatt tombs and iron foundries have been unearthed. Nature lovers may be interested in the 8km herbal trail, a loop south to Sela and Podturn and back via forest roads, which takes in a herb farm and the 15th-century Church of the Holy Trinity at Cerovec. Further afield is the 2km Dormouse Trail, which makes a loop from Kočevske Poljane, about 4.5km southwest of Dolenjske Toplice, and could be combined with a hike to Base 20.