People across the world welcomed the New Year with glittering fireworks and colourful celebrations.
In Vatican City, Pope Benedict XVI marked the end of 2011 with prayers of thanks and said humanity awaits 2012 with apprehension but also with hope for a better future.
"Another year approaches its end, while we await a new one, with the trepidation, desires and expectations of always," Benedict said at the traditional New Year's Eve vespers service, as he delivered his homily from the central altar of St. Peter's Basilica on Saturday evening.
Have a look at the moments from the pontiff's New Year Eve vespers service.