Palestinian youths peddled Santa hats to tourists and shop windows bearing signs reading “Jesus Is Here” displayed olivewood. From the Jaffa Gate side of the city, the most striking landmark is the Citadel, which is marked by David’s Tower, a misnomer given that the cylindrical structure dates from the 16th century.By contrast, the tall, square tower is 2,000 years old and was built by Herod.Inside the Citadel is a courtyard…