Although professional wrestling started out as petty acts in sideshows, traveling circuses and carnivals, today it is a billion-dollar industry. Revenue is drawn from live event ticket sales, network television broadcasts, pay-per-view broadcasts, personal appearances by performers, branded merchandise and home video. Particularly since the 1950s, pro wrestling events have frequently been responsible for sellout crowds at large arenas, including <answer>Madison Square Garden, as well as football stadiums</answer>, by promotions including the WWE, the NWA territory system, WCW, and AWA. Pro wrestling was also instrumental in making pay-per-view a viable method of content delivery. Annual shows such as WrestleMania, SummerSlam, Royal Rumble, and formerly Bash at the Beach, Halloween Havoc and Starrcade are among the highest-selling pay-per-view programming each year. In modern day, internet programming has been utilized by a number of companies to air web shows, internet pay-per-views (iPPVs) or on-demand content, helping to generate internet-related revenue earnings from the evolving World Wide Web.
Where large places are some of the major wrestling shows held at?
Madison Square Garden, as well as football stadiums