The isolated, car-free island of Käringön is a 40-minute ferry ride from Orust, and has less than 100 full-time residents who stay year round, even through the long winter. But it's a different story in the summer. In the 19th century, the middle classes in Sweden became enamored with the benefits of fresh sea air and started flocking to the small islands along the coast. Today about a thousand visitors arrive daily by ferry or private boat to enjoy the island's relaxed vibe. Come for a lunch of fresh-caught seafood at Petersons Krog or watch children on the pier trying to catch the little crabs crawling through the seaweed down below. In the cold weather, visitors can take a lobster fishing tour or sample fresh oysters at the Käringö oyster bar, which also has a hot tub that seats six.