The best-preserved ancient site in Lebanon, without a doubt, is Baalbek Roman Ruins. Lebanon northeast city Baalbek is the location of the ancient city of Heliopolis, and the biggest attraction is the two temples, one dedicated to Bacchus and the other to Jupiter. The remains of the city listed on the World Heritage Site list of UNESCO in 1984. Baalbek is the center of the Beqaa Valley, which is known for opiate production such as cannabis and opium, and the Hezbollah party has headquarters here, so often is given the warning for tourists to avoid the area. Check the latest safety information, and if it's safe, don't miss Baalbek Roman Ruins.