Base
Law offices of Goodman, Lieber, Kurtzberg, & Holliway; formerly Avengers Mansion; Baxter Building, Four Freedoms Plaza
(current) X-Factor Investigations, New York City (former)Professor Xaviers School of Gifted Youngsters, Salem Center, Westchester County, New York; Muir Island, Scotland; X-Factor headquarters, Embassy Row, Washington, D.C.; X-Factor Headquarters, New Yo