If you're visiting Lysekil, Sweden, here are a few things you can consider adding to your to-do list:

1. Stroll around Gamlestan: Explore the charming old town of Lysekil, known as Gamlestan. Wander through its narrow streets lined with colorful wooden houses and discover its quaint shops, cafes, and restaurants.

2. Visit Havets Hus: Explore the fascinating underwater world at Havets Hus, a popular aquarium and marine research center. You can see various species of fish and marine life native to the West Coast of Sweden and learn about the region's aquatic ecosystems.

3. Take a boat tour: Lysekil is situated on the stunning coast of Bohuslän, known for its picturesque archipelago. Embark on a boat tour to discover the nearby islands, rocky cliffs, and secluded beaches. You may also have the opportunity to spot seals, seabirds, and other wildlife.

4. Explore Stångehuvud Nature Reserve: Enjoy the beautiful natural surroundings of Stångehuvud Nature Reserve. Take a hike along the coastal trails, marvel at the dramatic cliffs, and take in breathtaking views of the sea. Don't forget your camera!

5. Relax at Pinneviksbadet: On a sunny day, head to Pinneviksbadet, a popular beach in Lysekil. Take a dip in the refreshing waters, soak up the sun on the sandy shore, or enjoy a picnic with family and friends.

6. Visit the Lysekil Church: Pay a visit to Lysekil Church, an impressive stone church dating back to the 17th century. Admire its architecture, explore the interior, and perhaps catch a glimpse of the beautiful stained glass windows.

7. Try local seafood: Being a coastal town, Lysekil is renowned for its delicious seafood. Indulge in fresh shrimp, lobster, oysters, and other local delicacies at one of the seafood restaurants or fish markets in the area.

8. Attend an event or festival: Check if there are any local events or festivals happening during your visit. Lysekil hosts various cultural, music, and seafood-themed events throughout the year, offering a chance to immerse yourself in the local culture and traditions.

Remember to check the opening hours and availability of attractions, as well as any travel advisories or guidelines in place during your visit. Enjoy your time in Lysekil!