AlQa'dah 16, 1434, Sep 22, 2013, SPA -- Visitors of the "Exhibition of Kingdom in SPA Lens" in which the Saudi Press Agency (SPA) is participating in the activities of Souq Okaz in its seventh edition have expressed their happiness over the 83rd anniversary of the national day of the Kingdom of Saudi Arabia on Monday. They expressed their admiration of the exhibition of photos which has documented the history of the development of the Kingdom at all levels since the era of the founder late King Abdulaziz bin Abdulrahman Al Saud until the era of the Custodian of the Two Holy Mosques King Abdullah bin Abdulaziz Al Saud.