Groos Badeplass is located in Grimstad and is a public outdoor recreation area that offers several beaches. The area has long, shallow sandy beaches and rocky cliffs, making it suitable for both children and adults. The bathing area has a jetty with a diving board, which provides opportunities for swimming and playing in the water.
In addition to swimming, there are large grassy areas available for various activities. Visitors can use the children's playground, as well as a sand volleyball court and a football pitch. For those who want to take a break, there is a café nearby. Groos Badeplass is a popular excursion spot, and is located close to the center of Grimstad, making it easily accessible for both locals and visitors.