The Elimination Chamber is a professional wrestling pay-per-view event, produced every February by WWE, a professional wrestling promotion based in Connecticut. The event was created in 2010, with its inaugural event taking place on February 21, 2010, replacing No Way Out. Elimination Chamber is a pay-per-view (PPV) event consisting of a main event and undercard that features championship matches and other various matches. The concept of the show is that the two main event matches (usually one from the Raw brand and one from the SmackDown brand) are contested inside the Elimination Chamber; one of these matches typically features the WWE Championship being defended, while the other is usually contested for the World Heavyweight Championship The first Elimination Chamber event took place on February 21, 2010 and aired live on PPV. The event's name was selected after WWE allowed fans to provide input via a survey on their official website and was chosen over Heavy Metal, Battle Chamber, Chamber of Conflict, and the original No Way Out name. Since its origin, each event has been held in an indoor arena, with all three taking place in the United States.