The Brooklyn Academy of Music, opening in 1861, was the Athenaeum’s greatest rival, and BAM was larger, closer to the homes of the Heights elite, and attracted first class orchestras and performers. The Athenaeum adapted, and became a meeting place for organizations, rallies, and revivals, as well as a more traditional lecture and performance venue. It worked for a long time, until 1902, when the City of New York took over the third floor, which contained the auditorium and ante-rooms, as a courtroom for the Court of Special Sessions. The court stayed until at least 1932.