Baalbek is one of the most spectacular archaeological sites in Lebanon.
During the summer season daily tours are available from Beirut to Baalbeck from most major hotels. The trip takes a little less than 2 hours each way.
It is possible to travel from Homs in Syria to Baalbek by bus. Buses leave from the Karnak or Luxury coach stations in Homs and cross into Lebanon at al-Qa'a, arriving soon thereafter at Baalbek. Cost is about USD$3.