Bohus Fortress Official Medieval ruins—views (€10).
Marstrand Island Free Sailing town—Carlsten Fortress (€15).
Tanum Rock Carvings Official UNESCO Bronze Age petroglyphs (€free-5).
Smögen Boardwalk Free Colorful fishing village (free).
Nordens Ark Zoo Official Nordic endangered animals (€28).
Lysekil Havsbad Beach Free Rocky coast—seal safari (€40).
Fiskebäckskil Village Free Captain houses—views (free).
Tjörn & Skärhamn Free Watercolor museum (€12).
Kosterhavet National Park Boat Official Sweden's first marine park (€30 boat).
Pilane Sculpture Park Official Outdoor art—Tjörn (€15).
Grebbestad Oyster Safari Official Shellfish tasting (€50).
Väderöarna Islands Boat Official Seal colonies—nature reserve (€40).