The Avengers Mansion was a building in former New York City. It was the headquarters of the Avengers and housed their Quinjet. It was heavily damaged when Ultron attacked and killed most of the Avengers. After his armor was damaged, Captain America ordered Iron Man to take the children of the Avengers away on the Quinjet hidden in the mansion. Tony took James Rogers, Torunn, Azari, and Henry Pym, Jr. and flew away. Unfortunately he could not get to Francis Barton and assumed the boy had died. Presumably, when Ultron destroyed New York City to build its Ultra City it also destroyed the mansion.