During the Greco-Roman period, the temple of Resheph was elaborately rebuilt, and the city, though smaller than its neighbours such as Tyre and Sidon, was a center for the cult of Adonis. In the 3rd century, a small but impressive theater was constructed. With the rise of Christianity, a bishopric was established in Byblos, and the town grew rapidly. Although a Sasanian colony is known to have been established in the region following the early Muslim conquests of 636, there is little archaeological evidence for it. Trade with Europe effectively dried up, and it was not until the coming of the First Crusade in 1098 that prosperity returned to Byblos, known then as Gibelet or Giblet.