| Kol Hassan Sabbah castle | |
| Native Name: | قلعه کل حسن صباح |
| Location Town: | Sarbisheh County |
| Location Country: | Iran |
| Building Type: | Castle |
Mo'menabad Castle (Persian: قلعه مؤمن آباد), locally known as Kal Hassan Sabbah castle (Persian: قلعه کل حسن صباح) is a historical castle located in Sarbisheh County in South Khorasan Province, The longevity of this fortress dates back to the Nizari Ismaili state.[1] [2]