The memorial is often covered with flowers , candles in glasses , and other belongings left behind by Lennon 's fans . On Lennon 's birthday ( October 9 ) and on the anniversary of his death ( December 8 ) , people gather to sing songs and pay tribute , staying late into what is often a cold night . The tributes usually run all night , but for a period through the late 1990s and early 2000s , mayor Rudy Giuliani enforced a curfew , which prohibited people from being inside Central Park after it closed each day at 1:00 a.m. Gatherings also take place on the anniversaries of birthdays of the other members of The Beatles . Impromptu memorial gatherings for other musicians , including Jerry Garcia and George Harrison , have occurred at the memorial . In the days following the September 11 attacks , candlelight vigils were held at the Imagine Circle to remember those killed
September 11 attacks
September 11 attacks
Strawberry Fields (memorial)