Qal’eh Kuh of Ferdows: A Historical Overview Qal’eh Kuh of Ferdows, known in Persian as قلعه کوه فردوس, is a remarkable historical site located atop Kuh-e Ghal’eh, situated to the south of Ferdows in the South Khorasan Province of Iran. This ruined fortress is steeped in history, particularly associated with the Nizari Ismailis during the…