The X-Mansion or Xavier Institute is the common name for a mansion and research institute appearing in American comic books published by Marvel Comics. The mansion is depicted as the private estate of Charles Francis Xavier, a character in X-Men comics. It serves as the base of operations and training site of the X-Men. It is also the location of an accredited private school for mutant children, teenagers, and sometimes older aged mutants, the Xavier Institute for Higher Learning, formerly the Xavier School for Gifted Youngsters.[1] The X-Mansion is also the worldwide headquarters of the X-Corporation. The X-Mansion's address is 1407 Graymalkin Lane, Salem Center, located in Westchester County, New York.[2] The school's motto is "mutatis mutandis". In a 2011 edition of the comic, Wolverine re-opens the school, at the same address, under the name of the Jean Grey School for Higher Learning.[3] After the Terrigen Cloud becomes toxic enough to mutants that they die from M-Pox, Storm has the mansion (renamed X-Haven) moved to Limbo to keep mutants safe from the Terrigen while a cure is sought.[4] After Medusa destroys the Terrigen Cloud so the mutants could survive, Kitty Pryde moves the mansion from Limbo to Central Park, New York,[5] and renames it the Xavier Institute for Mutant Education and Outreach.[6]