Millions of people around the world are celebrating the start of the new year with elaborate fireworks displays.
Auckland, in New Zealand, was the first major world city to kick off the party followed by Sydney where 1million people were thought to have watched the display over the city's harbour.
A rainbow waterfall plunged off the Harbour Bridge to celebrate recently passed legislation legalizing gay marriage in Australia.
In London around 250,000 people are due on the streets amid tight security.
Sydney kicked off 2018 with a bang with a rainbow themed firework display over the Harbour Bridge to celebrate recently-legalised gay marriage
Dozens of boats floated in Sydney's iconic harbour to get the best possible view of the fireworks on New Year's eve
Celebrations also took place in Melbourne, Hobart and Canberra at the same time as Sydney launched its fireworks
Millions of dollars were spent on pyrotechnics for the display, though Melbourne had bragged that it's show would be bigger
New Zealand kicked off worldwide celebrations for the start of 2018 as more than 3,000 fireworks were launched into the sky above Auckland as the clock struck midnight
The Sky Tower was the focus of celebrations in Auckland (pictured), while fireworks displays also took place in Wellington, Christchurch, and Dunedin
Meanwhile parts of Germany marked the evening of December 30th with a bizarre parade involving Perchten, a god figure derived from pagan religions that is similar to Krampus
Perchten is said to visit homes in the days after Christmas, especially on Twelfth Night, when she will reward children who have been good or disembowel those who have misbehaved