Inhabited since remote times, Roses possesses one of the most complete and impressive megalithic itineraries of the Costa Brava. Three large dolmens conserve the memory of the area's first settlers: the Creu d'en Cobertella (3000-2700 BC), the Llit de la Generala (3200 BC) and the Cap de l'Home. The Creu d'en Cobertella, the largest dolmen in Catalonia, dates from the Neolithic and was declared a historic-artistic monument in 1964. It has a large gallery covered by a four-ton slab which measures 5.20 m long, 2.45 m wide and 2.14 high. The tour around the origins of the town also reveals the funeral chamber of the Casa Cremada and its two menhirs (4th-3rd millennia BC), and the cave-dolmen of the Rec de la Cuana, from 2500 BC.