This picture-perfect island boasts plenty of good swimming holes, some complete with floats and trampolines for the enjoyment of those frolicking in the water. The plenitude of flat, broad rocks makes Käringön an ideal location for picnicking on a summer’s day. Regular ferry 381 runs roughly hourly from Tuvesvik (on the northwestern coast of Orust island); check up-to-date timetables at www.vasttrafik.se.

Lonely Planet's must-see attractions

Nearby Bohuslän attractions

1. Fiskebäckskil

10.07 MILES

Passenger/cyclist-only ferry 847 (25kr) crosses the Gullmarn fjord roughly hourly to Fiskebäckskil, of the cute cobbled streets and wood-clad houses. The…

2. Nordiska Akvarellmuseet

10.54 MILES

Skärhamn is home to the superb Nordiska Akvarellmuseet, a sleek waterside building housing exhibits by the likes of Arne Isacsson, whose watercolors…

3. Stångehuvud Nature Reserve

11.26 MILES

Out at the tip of the Stångenäs peninsula, the Stångehuvud Nature Reserve, crammed with coastal rock slab, is worth a stop for its secluded bathing spots…

4. Havets Hus

11.27 MILES

Havets Hus is an excellent aquarium with sea life from Gullmarn, Sweden’s only true fjord, which cuts past Lysekil. Peer at such cold-water beauties as…

5. Herring Museum

13.12 MILES

The tiny herring museum ('Sillebua') delves into the history of the island's canneries, salt houses and fishing industry, which peaked around 1750. It…

6. Hållö

16.56 MILES

This small, rocky, windswept island is home to a historic lighthouse and a number of bird species. Its otherworldly landscape is great for photographers,…

7. Carlstens Fästning

17.33 MILES

Looming over town, Carlstens Fästning is a fortress built in the 1660s after the Swedish takeover of Marstrand and Bohuslän. Marstrand's ice-free port was…

8. Smögen Fish Auction

17.6 MILES

Fishing boats unload their catches of prawns, lobsters and fish at the Smögen harbour. You can score some über-fresh shellfish if you get to the small…