A few times previous, I've mentioned a cache of pictures of Beirut taken in 1965 that are available online. If you have the time go ahead and follow this link and browse around. They're fun to see.
The collection of mid-60s images includes this one.
I knew I recognized the place, and finally the other day, I took photo of what it looks like now. It's the Emir Munzer mosque downtown, very near Place de L'etoile. In fact, if you're standing there by the clock tower and look over to the northwest, this is pretty much what you will see.
Wikitravel has this to say about it: The Amir Munzer Mosque was built in 1620 on an earlier structure. Also called Nafoura (fountain) Mosque, there are eight Roman columns in its courtyard.
That's interesting stuff. But what I'd love to know is, why weren't there crescents atop the minaret and dome in the 1960s. When were they installed and why?