Siege of Akhlat (1229) Siege of Jaén (1230) – Reconquista Siege of Beirut (1231–1232) Siege of Amida (1232) Siege of Kaifeng (1232–1233) – Mongol conquest of the Jin dynasty Siege of Burriana (1233) – Reconquista Siege of Caizhou (1233–1234) – Mongol conquest of the Jin dynasty Siege of Constantinople (1235) – a joint Bulgarian-Nicaean siege on the capital of the Latin Empire. Siege of Bilär (1236) – Mongol invasion of Volga Bulgaria Siege of Córdoba (1236) – Reconquista Siege of Ryazan (1237) – Mongol invasion of Rus' Siege of Kolomna (1237–1238) – Mongol invasion of Rus' Siege of Moscow (1238) – Mongol invasion of Rus' Siege of Vladimir (1238) – Mongol invasion of Rus' Siege of Kozelsk (1238) – Mongol invasion of Rus' Siege of Brescia (1238) – Part of the wars between Holy Roman Emperor Frederick II and the Lombard League Siege of Mt. Tebulosmta (1238-1250) - Mongol invasions of Durdzuketia Siege of Faenza (1239) – Part of the wars between Holy Roman Emperor Frederick II and the Lombard League Siege of Jerusalem (1239) – Crusades Siege of Kiev (1240) – Mongol invasion of Rus' Siege of Esztergom (1242) – First Mongol invasion of Hungary, Citadel of Esztergom,Turoc, Nyitra, Győr, Pannonhalma, Székesfehérvár, Segesd, Varasd, Kemlék, Csázma, Zágráb, Trogir, Veszprém, Tihany, Moson, Sopron, Vasvár, Zala, Léka, Pozsony, Komárom, Fülek and Abaújvár besieged but successfully resisted Siege of Viterbo (1243) – Part of the wars between Holy Roman Emperor Frederick II and the Lombard League Siege of Montségur (1243–1244) – Albigensian Crusade Siege of Jerusalem (1244) by the Khwarezmians Siege of Damascus (1245) Siege of Jaén (1245–46) – Reconquista Siege of Ascalon (1247) – Crusades Siege of Parma (1247–1248) – Part of the wars between Holy Roman Emperor Frederick II and the Lombard League Siege of Seville (1247–1248) – Reconquista Siege of Aachen (1248) Siege of Homs (1248–1249) Siege of Damietta (1249) – Seventh Crusade Siege of Naples (1252) Siege of Cologne (1252) Siege(s) of Gerdkuh (1253–1270) - Mongol campaign against the Nizaris Siege of Mehrin (1253) Siege of Tun (1253) Siege of Tun (1256) Siege of Maymun-Diz (1256) Siege of Alamut (1256) Siege of Lambsar (1256–1257) Siege of Cologne (1257) Siege of Baghdad (1258) Siege of Mayyafariqin (1258–1259) Siege of Diaoyu Castle (1259) – Mongol conquest of the Song dynasty Siege of Al-Bira (1259) – Mongol invasions of the Levant Siege of Aleppo (1260) Siege of Constantinople (1260) – Nicaean–Latin