Portals complement main topics in Wikipedia, and expound upon topics by introducing the reader to key articles, images, and categories that further describe the subject and its related topics. Portals also assist in helping editors to find related projects and things they can do to improve Wikipedia, and provide a unique way to navigate Wikipedia topics.
At present, there are 533 portals.
Recreation and entertainment
Continents
Regions
Provinces and States
Counties
Cities
Multinational
Human activity
Impact of human activity
Abrahamic religions
Non-Abrahamic religions (plus Indian, Far Eastern, and traditional "pagan" religions)
Other