Triskelion

Building in Washington, D.C. · Earth · position approximate (fictional or vague in the sources)

Cinematic

2014 Rogers uncovers Hydra inside S.H.I.E.L.D. and helps stop Project Insight at the Triskelion, where he meets the Winter Soldier, who is revealed as Barnes. (Steve Rogers, permalink)
2014 Hill takes control of the Project Insight Helicarriers from the Triskelion command center and fires them at one another as Hydra and S.H.I.E.L.D. fall. (Maria Hill, permalink)
2014 Sam meets Steve Rogers on a jog in Washington, D.C., volunteers to help him, and fights at the Triskelion as Hydra's Project Insight is stopped. (Sam Wilson (Captain America), permalink)
2014 Sent by Alexander Pierce to kill Nick Fury and then Rogers and Natasha Romanoff, the Winter Soldier was recognised by Rogers at the Triskelion fight, regained memories, pulled Rogers from the river and left Hydra. (Winter Soldier, permalink)
2014 Nick Fury shoots Pierce dead at the Triskelion moments before the Helicarrier destroys it. (Alexander Pierce, permalink)
2014 While being driven to the Triskelion, he is thrown from the car by the Winter Soldier on Pierce's order and killed by a truck. (Jasper Sitwell, permalink)
2014 By the Triskelion battle Strucker's scientists realized the Scepter was far more powerful than thought. (mind-stone)

Secret Wars Thanos invades Earth for a supposed Cosmic Cube, kills War Machine, and is taken down by Captain Marvel and imprisoned at the Triskelion. (Thanos, permalink)
Secret Wars During Civil War II Kate joins the attack on the Triskelion supporting Iron Man. (Kate Bishop, permalink)