If being by the water is a major draw, Hove strand is a spot you might want to check out, located 2.7 mi (4.4 km) from central Arendal. If you want to continue walking by the waves, head to Bukkevika located nearby.
The center of Arendal is home to cultural attractions like Vitensenteret Sorlandet, so you might want to stop by during your stay. If you want to experience more of the culture Arendal has to offer, head to Klockers Hus, Glass Elevator to the Top of Fløyheia, and Trinity Church.