Tripoli is Lebanon’s second largest city and a Tripoli day trip is worth it if you're in Lebanon. It’s a completely different world compared to Beirut. I left Beirut around 08:30 and was in Tripoli at 10:00. I visited both the International Fair and also Tripoli Old Town, both worth it!

Oscar Niemeyer designed the Rachid Karami International Fair in the late sixties for the World Fair in 1976. The fair ground was never finished as the civil war broke out in 1975. Today all the concrete structures are still there and not damaged by the war. The site is a 45-minute stroll as, honestly there isn't that much to see. I did climb, the tower, which was "partially locked". I think it wasn't allowed. Access is free to all the places. All buildings are empty but you can wander around freely.

When I visited, there was some youth event going on but a real new use for the place was never put in place.

I give it a 3.5 stars, as I like this architecture and this is certainly worth a place on the WHS list.