Ellis Island
From Tardis Wiki, the free Doctor Who reference
Ellis Island was an island in New York City. In 1892, after Jack Harkness got into a fight at the immigration centre there, a man shot him though the heart. This caused his second death and proved to him he could not die. (TV: Utopia)
Jack went to Ellis Island again in 1927, where he met Angelo Colasanto. (TV: Immortal Sins)