Frogner Park in Oslo is the go-to spot for locals and tourists alike. It's the largest park in the city center, offering a mix of relaxation and fun activities. With its famous Vigeland Sculpture Park, beautiful rose gardens, and Norway's biggest playground, there's something for everyone. You can run, have a picnic, or just soak up the sun. And don't forget to check out the café and restaurant for a bite to eat.