Khor Virap has immense significance to Armenian history. It was there that Grigor Lusavorich, or St Gregory the Illuminator as he later became, was imprisoned. Whilst behind bars, Lusavorich cured the sick King Trdat III - some say he was mad and others that his head resembled that of a boar - and as a result he converted to Christianity. Today, it’s possible to visit the underground prison cell at St Gevorg Chapel. You’ll find it close to the Turkish border along the Ararat Valley where the monastery dominates the cityscape of Khor Virap.