It is a very worthwhile place to visit. Personally, I think the old Saudi royal palace beats all other attractions in Riyadh. Whether it is humanities, history, environment or architecture, it should be the number one attraction in Riyadh. Opposite the palace, you can go to the shop to buy souvenirs or have some coffee and dessert. At night, you can watch the large projection short film on the palace wall opposite the palace. It is only a few minutes long short film that tells the history of Saudi Arabia from its founding to the present. It is very shocking!