The Dolenjska area follows the dark-cyan waters of the Krka River as it gently winds from its cave source in Krka village, cutting through a deep valley and passing through blink-and-you-miss-them settlements down to Novo Mesto, the region's main town. Along the way, a handful of castles and historical churches provide stop-offs for travellers who prefer to go slow; those after a spa break make a beeline straight for Dolenjske Toplice for relaxing treats.