Known also as "Lim" or "Limski Kanal", this fjord-like valley runs for 35 beautiful kilometers along Croatia's Istrian Peninsula until it empties out into the Adriatic Sea not far from the town of Vrsar. That's 35 kms of caves, bike trails, hiking paths and arguably the best rock climbing to be found outside of Paklenica National Park. If you're of an adventurous disposition, pack the nylon and carabiners and follow Rt 21 right to the mouth of the fjord to take a whack at some great crags, or just rent a sea kayak in Vrsar and head out on the water. If you feel like rewarding yourself afterwards, search out the bar at Pirate Cave, which is pretty much exactly what it sounds like: a bar set inside a cave (some hiking required) overlooking the sea. It's an interesting way to end a day spent exploring one of northwestern Croatia's coolest natural getaways.
Note:Don't shy away from asking some locals about good spots to hike, bike, etc., or you could always just check our links for some additional info on where/how to get started.