Rab is the most appealing Croatian island north of the Dalmatian Coast. Though it's one of the greenest islands in the northern Adriatic, its landward half is an eerily dry, rocky moonscape — the result of saltwater blown ashore by harsh Bora winds. But on the seaward side of the island, you'll find lush vegetation, as well as the island's main town, also called Rab. Rab's Old Town peninsula is nestled along a sleepy harbor. Along the spine of the Old Town are four different Venetian-style campaniles — Rab's claim to touristic fame. A relaxing seafront promenade runs behind the Old Town.