Where was Billy the Kid killed?

Billy the Kid (born Henry McCarty, and also known as William H. Bonney; 1859 – July 14, 1881) was an American Old West gunfighter who participated in the New Mexico Territory's Lincoln County War of 1878. He is known to have killed eight men.

Having recently escaped prison and killing two guards, the New Mexico Governor placed a new $500 bounty on Bonney's head. Almost three months after his escape, a local lawman, Pat Garrett, acted in response to rumors that Bonney was in the vicinity of Fort Sumner, New Mexico. Garrett and two deputies left Lincoln on July 14, 1881, to question one of the town's residents, a friend of Bonney's named Pete Maxwell. Maxwell, son of land baron Lucien Maxwell, spoke with Garrett the same day for several hours. Around midnight, the pair sat in Maxwell's darkened bedroom in Fort Sumner when Bonney unexpectedly entered the room. Accounts vary as to the course of events. The canonical version states that as Bonney entered the room, he failed to recognize Garrett due to the poor lighting. Drawing his revolver and backing away, Bonney asked "Quién es? Quién es?", Spanish for "Who is it? Who is it?". Recognizing Bonney's voice, Garrett drew his revolver, firing twice. The first bullet struck Bonney in the chest just above his heart, killing him.