Jerash, located in modern Jordan, was one of the “10 Cities”, the Decapolis, mentioned in the Gospels (see references to Decapolis here and specific mentions of Jerash [Gerasa] here). National Geographic, as always, does a fantastic job of of a visual presentation, with photos and reconstructions of the ancient city, as well as giving an overview of the history of the location. I have yet to visit Jerash, but I hope to in the near future.