The amazing Jeita Grotto, located in the coastal mountains north of Beirut, contains one of the world's most impressive agglomerations of stalactites and stalagmites and is one of Lebanon's most visited attractions. The caves are the source of the Nahr al-Kalb River (also known as the Dog River).
There are two caverns. The Upper Cavern (pictured right) is visited on foot, with a walkway taking you deep into the mountain; if you have time only to visit one cavern this should be your choice; the spectacle is awe-inspiring. The smaller Lower Cavern has less variety and is visited by almost-silent electric boats on the underground river (you need to duck down in places to avoid hitting your head on the rocks). You reach the Upper Cavern by cable car; between the two caverns you travel by a small toy train.
Opening hours: 9 a.m to 7 p.m. every day in summer (June to September). Winter hours are 9 a.m. to 5 p.m. (closed on Mondays).