If you have 24 hours to spend in Southampton, here are some suggestions:
1. Visit the SeaCity Museum - This museum explores Southampton's maritime history and the story of the Titanic. It will take about 2-3 hours to fully explore the museum.
2. Stroll through the Old Town - Visit the historic buildings and cobbled streets in the Old Town. Take your time to enjoy the architecture and stop for a coffee at one of the many cafes in the area. This could take 1-2 hours depending on how long you spend exploring.
3. Walk in the Southampton Common - This is a large park in the middle of the city with many paths and open spaces. Take a walk or have a picnic in the park. It could take 1-2 hours depending on how far you choose to walk.
4. Visit the City Art Gallery - Southampton's art gallery houses over 3,500 works of art. Entry is free so take your time to admire the pieces. This will take about an hour or so to walk around the galleries.
Overall, with these activities, you can cover most of the city in one day.