Panama has plenty of interesting things to see besides the beaches. If you are looking for some sightseeing you will not be disappointed by the capital city, with its Casco Viejo ( Old town) and the ruins of Panama Viejo. Another unmissable place to go is The Canal. Then go to some mountain area like Boquete or El Valle if you like nature, hiking and chill. Try to discover also how indigenous groups still live in Panama, visiting one of the autonomous region like San Blas.