In several places around the world, New Year’s celebrations have started.

Festivities have begun around the world as revellers cheered the advent of the New Year, with Australia, New Zealand and Japan being some of the first countries to bid farewell to 2017.

In the Australian city of Sydney, more than an estimated one million people gathered to watch a spectacular fireworks display in the harbour.

About eight tonnes of fireworks were lit during the colourful display, which lasted 12 minutes. The celebration started with a rainbow cascade to mark Australia’s legalisation of same-sex marriage, which happened earlier in 2017.

Fireworks explode near the Sydney Opera House as part of new year celebrations on Sydney Harbour, Australia. [David Gray/Reuters]

In Auckland, New Zealand, tens of thousands of people gathered to watch a fireworks display on the iconic SkyTower, the city’s most well-known landmark.

Let the party start! #Auckland kicks off the #NewYear celebrations with stunning firework displays as the world rings in 2018. [📸: GETTY] pic.twitter.com/f8lk0UKu7m — AmMaD (@Cob_Adder) December 31, 2017

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In Japan, people celebrated the arrival the of the Year of the Dog, eating New Year’s food such as noodles, shrimp and sweet black beans and praying for peace and good fortune.

In the capital, Tokyo, hundreds of white balloons were released into the night sky, followed by a music show.

Hong Kong residents wear 2018 glasses during New Year’s Eve celebrations [Kin Cheung/The Associated Press]

Elsewhere, major international cities also prepared to welcome the New Year.

Millions of people are expected to gather in Berlin, London, Rio de Janeiro and New York to celebrate the arrival of 2018.

In the Turkish city of Istanbul, meanwhile, dozens of people gathered outside a nightclub to remember the victims of an attack during New Year’s celebrations 12 months ago.

Thirty-nine people were killed – mostly foreigners – and 79 wounded in the Reina club shooting, for which the Islamic State in Iraq and the Levant (ISIL, also known as ISIS) claimed responsibility.

A man leaves a carnation outside the Reina nightclub in Istanbul. [Emrah Gurel/The Associated Press]

For UN Secretary-General Antonio Guterres, the end of 2017 was an opportunity to call for peace and unity.

“I believe we make our world more safe and secure, but we can only do that together. I urge leaders everywhere to make these new years resolutions. Narrow the gaps, build trust,” he said.