The location here is the former US embassy.

The Iran hostage crisis (Persian: تسخیر لانه جاسوسی امریکا‎, "Occupation of the American embassy") was a diplomatic crisis between Iran and the United States in which 52 Americans were held hostage for 444 days from November 4, 1979, to January 20, 1981, after a group of Islamist students and militants took over the American Embassy in Tehran in support of the Iranian Revolution. President Carter called the hostages "victims of terrorism and anarchy", adding that the "United States will not yield to blackmail".^[2]