The Castle of Oblivion (Middle Persian: anōšbord), also known as the Prison of Oblivion or the Fortress of Oblivion, was a castle and political prison of the Sasanian Empire located in Khuzestan in southwestern Iran.^[1]

Notable prisoners of the Castle of Oblivion

Arshak II, Arsacid prince, who ruled Armenia as a Roman client from 350 until 367. Captured and imprisoned during Shapur II's invasion of Armenia.^[2]
Kavad I, Sasanian king, briefly imprisoned after being deposed by the nobility and clergy in 496.^[3]

References

Sources

Daryaee, Touraj (2009). "SHAPUR II". Encyclopaedia Iranica.
Daryaee, Touraj (2014). Sasanian Persia: The Rise and Fall of an Empire. I.B.Tauris. pp. 1–240. ISBN 978-0857716668.

Sasanian castles

Azerbaijan

Baku	Chirag Gala Maiden Tower
Nakhchivan	Yazdegerd Castle

Georgia

Lazica	Onoguris

Iraq

Diyala	Qal'at Sefid

Iran

Ardabil	Kohneh Qal'eh, Meshginshahr Qez Qaleh Si, Bileh Savar Qunakh Qiran castle
Bushehr	Zendan castle
East Azerbaijan Province	Babak Fort Dag Castle Hulagu Khan Castle Jushin Castle Poshtab Castle Qiz Castle Daghi
Fars	Angosht Gabri Castle Ashpaz Khaneh Zahhak Castle Azhdeha Peykar Castle Gud Qalat Castle Izad-Khast Castle Parvizeh Evaz Castle Puskan Castle Qal'eh Dokhtar Qal'eh Dokhtar, Bishapur Qalat Castle, Kavar Qalat Castle, Qir and Karzin Qalat Khawari Castle Sarvestan Palace Shah Neshin Castle Tang Lorun Castle Tutangi Meseh Castle
Gilan	Rudkhan Castle
Hamadan	Chobin Castle Nahavand Castle
Hormozgan	Aamaj Castle Dulab Castle Eshgaft-e Moneh Castle Siba Castle Tawseelah Castle
Ilam	Abdanan Castle Anjir Dehloran Castle Guria Castle Heliveh Castle Hezarani Castle Hezar Darb Castle Paqala Hezarani Castle Posht Qaleh Abdanan Castle Sheikh Makan Fort Shemiran Castle
Isfahan	Abyaneh Bayazeh Castle Karshahi Castle Qal'eh Bozi Qurtan Castle Tabreh Castle
Kerman	Ardeshir Castle Arg of Anar Qahqah Castle Rayen Castle Sang Castle
Kermanshah	Ban Qaleh Maryam Castle Sar Firuzabad Castle Sarmaj Castle
Khuzestan	Arrajan Castle Castle of Oblivion Garmez Castle
Kohgiluyeh and Boyer-Ahmad Province	Kak Kahzad Castle, Dana
Lorestan	Falak-ol-Aflak
Markazi	Jamshidi Castle Qal'eh Dokhtar, Saveh
Mazandaran	Kangelo Castle Malek Bahman Castle Owlad Castle
North Khorasan Province	Belqeys Castle Sangar Castle
Qazvin	Lambsar Castle Meimoon Ghal'eh Semiran Castle Shirkuh Castle
Qom	Qal'eh Dokhtar, Qom Qiz Castle, Jamkaran
Razavi Khorasan	Atashgah Castle Qal'eh Dokhtar, Shurab Tus Citadel
Semnan	Shir Qal'eh
Sistan and Baluchestan Province	Bampur Castle Chehel Dokhtar Castle, Iranshahr Chehel Dokhtaran castle Kak Kahzad Castle, Hamun Mount Khajeh Pirouz Got Castle
South Khorasan	Rostam Castle, Khusf
Tehran	Gabri castle Iraj Castle
West Azerbaijan	Takht-e Soleymān
Yazd	Abarndabad castle Bedaf Castle Haruni Castle Khavidak Castle Naryn Castle, Meybod Sar Yazd Fortress Shavvaz Castle
Zanjan	Behestan Castle

Oman

Al Batinah Region	Nakhal Fort

Russia

Dagestan	Naryn Kala Castle

Saudi Arabia

Qatif	Qal'at al-Qatif

Also See: Sasanian castles