For a brief visit, one day in Kristiansand lets you explore the city center, visit attractions like the Zoo and waterfront, and enjoy local shops. With 2-3 days, you can dive deeper, exploring museums, historic areas like Posebyen, and outdoor activities like hiking and beach visits. For a more extensive experience, 4+ days allow you to thoroughly explore Kristiansand and take day trips to nearby attractions, enjoying the region's natural beauty.