It is outdoors. It is modernized and replaced the old charming souks- nevertheless it is still fun with lots to see. Hope this helps

yes the is a parking underground, just under the souks .

Beirut Souks are a very modern part of the city you will not find the souvenirs that represents Lebanon, however the right place to find them is in a small city north west of Beirut around 35 Kilometers called Jubail overlooking the beautiful Mediterranean sea, known to be the oldest city in the world, you will find plenty of historical souvenirs that represents Lebanon. Back to Beirut Souks, prices are medium to high and they accept US dollars. Finally, don't miss visiting the city of Jubail you will need a full day to visit the old souks, enjoy the boat ride and fine seafood cosines the city is famous for. Within a few kilometers from Jubail to the North another small city called Amshit that have a famous superb restaurant called (Babil Baher) with magnificent view to the Mediterranean and outstanding fresh seafood menu.

The only entry you will have to pay is the parking fees for your car, but if you shop in TSC supermarket that is located in this mall for 50000 LL = 33.3$, then you have 2 hours free parking. Enjoy