Wikipedia
Events at Dura
c. 300 BC
Dura-Europos founded by the Seleucids[+187 years]
c. 113 BC
Parthians take Durac. 65-19 BC
City walls constructed, including some towers[+80 years]
c. 33 BC
Dura becomes a Parthian provincial administrative center[+16 years]
c. 17-16 BC
Palmyrene Gate begun[+133 years]
AD 116
Trajan takes Dura. Triumphal arch built[+5 years]
AD 121
Parthians regain Dura[+39 years]
AD 160
Earthquake[+4 years]
AD 164
Romans under Lucius Verus again control Durac. AD 168-171
Mithraeum first builtc. AD 165-200
House converted to synagogue[+47 years]
'c. AD 211
Dura a Roman colonypost-AD 216
City walls heightened[+13 years]
c. AD 224
(Parthians defeated by Sassanids)c. AD 232-256
House converted into a Christian chapel and decorated[+14 years]
AD 238
Graffito stating "Persians descended on us" was written[+2 years]
c. AD 240
Mithraeum rebuiltc. AD 244-254
Synagogue paintings[+13 years]
AD 253
First Sassanid attackpost-AD 254
Defensive embankment built to bolster city walls[+3 years]
AD 256-257
Dura falls to the Sassanid king Shapur IDura-Europos , also spelled Dura-Europus, was a Hellenistic, Parthian and Roman border city built on an escarpment above the right bank of the Euphrates river. It is located near the village of Salhiyé, in today's Syria. In 113 BC, Parthians conquered the city, and held it, with one brief Roman intermission (114 AD), until 165 AD. Under Parthian rule, it became an important provincial administrative center. The Romans decisively captured Dura-Europos in 165 AD and greatly enlarged it as their easternmost stronghold in Mesopotamia, until it was destroyed after a Sassanian siege in 257 AD. After it was abandoned, it was covered by sand and mud and disappeared from sight.
Dura-Europos is extremely important for archaeological reasons. As it was abandoned after its conquest in 256–7 AD, nothing was built over it and no later building programs obscured the architectonic features of the ancient city. Its location on the edge of empires made for a co-mingling of cultural traditions, much of which was preserved under the city's ruins. Some remarkable finds have been brought to light, including numerous temples, wall decorations, inscriptions, military equipment, tombs, and even dramatic evidence of the Sassanian siege during the Imperial Roman period which led to the site's abandonment. After being severely looted by the Islamic State in the ongoing Syrian Civil War, it was demolished by ISIS.