Hotels in Primorsko-Notranjska (Littoral–Inner Carniola), Slowenien
Primorsko-Notranjska is a region in southwestern Slovenia famous for its dramatic karst caves and medieval castles. Summers are warm, with highs around 30°C (86°F), perfect for exploring the 20 kilometers of tunnels at Postojna Cave or visiting Predjama Castle built into a cliff. Winters are chilly, often dropping to 0°C (32°F), but you can still hike around the intermittent Lake Cerknica, which fills with water during the rainy season and offers unique birdwatching.