Visited in May 2023.

The WHO is located in the territory controlled by Hezbollah, so you need to be careful when planning your trip, there may be bombings in the surrounding area.
I got here by bus from Beirut, not without adventures, I had to pay extra and change to another bus, but you can do without a taxi.
Mysterious in its monumentality, the temple complex was built on the easternmost edge of the Roman Empire. A grandiose sacred complex was built here in the first century AD, which is considered to be one of the largest in the ancient world. The temple-sanctuary of Jupiter on a massive stylobate, the temple of Bacchus, the temple of Venus, there was also a temple of Mercury on the neighboring hill, but it did not survive.
At the same time, it is not very clear who built it, for whom, why exactly in this place. Even dating is done by indirect signs. Meanwhile, it is obvious that a pilgrimage center of such a scale had to have an imperial significance. Perhaps a role was played by ancient traditions of religious worship in Heliopolis, as Baalbek was called under the Romans.
In the nearby quarry, a giant thousand-ton block is still preserved, which was never completely processed, and in 2014 it was further excavated by archaeologists.
The temple inspires respect, first of all, for its scale and a fairly good degree of preservation.