Lebanon fits Roman temples at Baalbek, Phoenician ports at Byblos and Tyre, mountain villages and Beirut itself into a country roughly the size of a small province. Distances are short enough that most sites work as day trips from the capital.
The guides on this page cover Lebanon as a whole. Spring and autumn suit the mountains and the coast alike; the country even has a short ski season. Lebanon has faced severe economic crisis, power shortages and periods of regional conflict in recent years, and conditions in the south and near the borders differ from Beirut, so current official advisories are the right basis for planning.