Explore santa cruz de tenerife the capital of the canary islands on this city sightseeing hop on hop off bus tour board the open top double decker buses and discover the areas main attractions including plaza de espaa the largest square in town and the starting point of the hop on hop off tours castillo de san juan castle of john baptist the auditorio de tenerife auditorium of tenerife the museo de la naturaleza y el hombre natural science and archaeology museum and the iglesia