Byblos (Βύβλος) is the Greek name of the Phoenician city Gebal (earlier Gubla). It is a Mediterranean city in the Mount Lebanon Governorate of present-day Lebanon under the current Arabic name of Jbeil (جبيل Ǧubayl) and was also referred to as Gibelet during the Crusades. It is believed to have been founded around 5000 BC, and according to fragments attributed to the semi-legendary pre-Trojan war Phoenician historian Sanchuniathon, it was built by Cronus as the first city in Phoenicia.[1] Today it is believed by many to be the oldest continuously-inhabited city in the world.

It is mentioned in the Bible in 1 Kings 5:18, referring to the nationality of the builders of Solomon's Temple, and also in Ezekiel 27:9, refering to the riches of Tyre.

http://en.wikipedia.org/wiki/Byblos