Baalbek بَعلبَك is one of the most spectacular archaeological sites in Lebanon and one of the country's UNESCO World Heritage Sites. Baalbeck or 'Heliopolis' as it was known is the site of great ancient temples built by the Phoenicians, the Romans, and other civilisations that have conquered the region and enjoyed the fertile soil of the Bekaa Valley.
When you visit Baalbeck, be sure to drop by Abd an-Nabi al-Afi, the fellow who is caretaker to possibly the largest cut stone to be found anywhere on Earth (Hajar al-Hubla). He's working hard to clean up the environment a little bit, and he even offers tours of the area. Ask him to take you to the cafe up on the hill for an evening view of the valley.