All foreigners need a visa, available at consulates or in some cases on arrival. If there is evidence of a visit to Israel in your passport, you won't be allowed in. Tourist visas are valid for 15 days and must be used within one month of being issued.
Extensions are available.
Winter can be downright unpleasant on the coast and in the mountains, when temperatures drop and the rains begin. If you're in Syria at this time, be sensitive to the fact that most of the people around you are very, very hungry. Ramadan ends with a huge feast, Eid al-Fitr , where everyone prays together, visits friends, gives presents and stuffs themselves. Eid al-Adah , another moveable event, is the other big feast of the year, and marks the time when Muslims should make the pilgrimage to Mecca. We encourage you to verify any critical information with the relevant authorities before you travel.