In pictures: John Lennon remembered

Twenty years after John Lennon was murdered, fans paid homage to the former Beatle all around the world, from his birthplace, Liverpool, to New York City, his last home.

The John Lennon memorial at Central Park in New York, near where the singer was killed

A blue plaque was unveiled at Lennon's childhood home in Liverpool

The piano Lennon used to compose his final album, Double Fantasy, was on display in Tampa, Florida

A fan visits the John Lennon museum in Omiya, near Tokya in Japan, which opened on Oct. 9, Lennon's birthday

A memorial was unveiled in Bulgaria ....

... as young people sang on Lennon Street in Warsaw

The Rock and Roll Hall of Fame in Cleveland, Ohio, used the anniversary to campaign against handguns