Saudi Arabia isn't one of those places that you decide to go to on a whim. You will definitely want to spend plenty of time planning your trip before purchasing tickets and hopping on a plane. A few online resources that you should take a look at before your trip include:

Riyadh City -- this comprehensive website provides information on tourism, shopping, sports, activities, and religion.

Tour Saudi Arabia -- this website includes images of buildings and other sites in Riyadh, along with general travel information.

Riyadh on Wikipedia -- this site provides general encyclopedic information on the city of Riyadh.

For print resources, you'll want to look for travel guides that focus on the Middle East. Lonely Planet, Frommer's, and Fodor's are all great resources to look for.

For additional information about the city upon arrival, check out the Tourist Information Center that recently opened in the King Khaled International Airport.