In Comics
Captain America Comics #1 - Meet Captain America
New Mutants #25 (March, 1985)
Base
Lighthouse, Earth Orbit; Starlight Citadel, Otherworld; formerly Braddock Manor; Braddock Lighthouse, England; New York City (during exchange trip, specifically Peter Parkers Manhattan apartment); flat near Thames University, London
formerly Ruth Aldines mind, Utopia, San Francisco Bay, California; Westcliffe, Colorado; "No-Time"; Moira MacTaggarts Mutant Research Center, Muir Island, off the coast of Scotland; Haifa; Paris, France