Baalbek's Temple of Bachus is a World Heritage site and one of the oldest, biggest, & best preserved Roman temple ruins in the world.
It is a must visit and it will take you back in time.
Up till today, this location is a mystery as it is built on some of the largest pieces of rocks in the world. They have been perfectly carved and stacked on each other to the millimeter after being transported several kilometers uphill.
Today's biggest machines cannot carry these huge rocks as some weight 1000 tons.
It is one of the historical mysteries of the world, and some even say that possibly alien technologies could have been used.
Regardless what is true, visiting is a must to see the sheer size of this site, and the beauty of the past.
The entrance is 2500 LBP (~2 USD) for students, 7000 LBP (~5 USD) for Lebanese, and 12000 LBP (8 USD) for foreigners.
The area overall is very cheap, average cost for lunch per person is about 5-8 USD.