El Penyó de l'Alcalà (Peña de la Alcalá)

Guadalest (Marina Baixa) — Plaça de Sant Gregori

11th-century cylindrical watch tower standing on a rocky pinnacle, whose access is extremely difficult. It controlled the valley of the Guadalest river, now occupied by a reservoir. Only its lower half survives, but its unique form makes it an iconic image of Guadalest.