Nickelodeon (aka Nick) is the world's most popular international media subsidiary and children's broadcast television network based in One Astor Plaza, New York City, New York, U.S.. Our "flagship" station of Nick is FOUR in Fort Discovery (Nickelodeon's former headquarter location before moving to it's current headquarter), which switched to Discovery Fanatic in 1987. Nickelodeon is available on (almost) every TV provider in the US.