Sousse is one of the older cities in Tunisia, possessing an authentic medina, which has been declared a UNESCO World Heritage Site.
Located on the coast, it has good beaches and a clear turquoise sea. It is a popular tourist destination, particularly with Russians, Serbs, Croats, British, Germans and East European people. You will be surprised to see many empty hotels and hotel clubs (permanently closed) along the beach front north of the centre. However, Medina and beach areas are still lively.
All of Sousse's main sights are located within the labyrinthine medina in the heart of the city. Walk around and get lost in the western residential areas, which have beautiful surprises. There are signboards with a "cultural walk" marked out that you could follow. Up on the western side, the medina goes unto higher ground and you can see the sea. Walking around the fishing boats at the port is a pleasant way to spend time, and families with children may wish to take a trip on one of the 'pirate' ships which offer fishing and other nautical activities.