Suggestions

• When was the first mentioning of the city by the name Riyadh?

• What did Ibn Battuta describe Hajr as?

• Which company offers charter bus trips within Saudi Arabia and to neighboring countries?

• What is the average elevation of Riyadh?

• What is the ranking of Riyadh among the most visited cities in the world?

• What is the special aspect of the Kingdom Tower?

• Which cities are connected to Riyadh by the Saudi Railways Organization?

• When did the world's richest thoroughbred horse race take place in Riyadh?