But a tower block gas explosion that killed at least four people and left dozens more missing has cast a shadow over New Year's celebrations - the biggest holiday of the year in Russian Federation.
Parisians and tourists gathered on the Champs-Elysees to celebrate New Year's Eve under heavy security.
A peak audience of 13.3 million was the high of the night, 5 minutes into 2019.
U.N. Secretary-General Antonio Guterres issued a bleak New Year's message that called climate change an existential threat and warned that "it's time to seize our last best chance".
The Greek city of Athens celebrated new year with a colourful fireworks display that lit up the sky over the ancient monuments of the Acropolis.
He vowed that London would remain the same after March 29 2019, and said the fireworks display was about "showing the world, while they're watching us, that we're going to carry on being open-minded, outward looking, pluralistic". Russian Federation saw in the new year progressively over several time zones starting in the far east, with concerts and light shows planned for Moscow city parks, and more than 1,000 ice rinks opened for merrymakers.
Nigerians have joined the rest of the world in ushering in the year 2019.
REUTERS/Khalid al-MousilyFireworks explode around National Monument during New Year's Eve celebration in Jakarta, Indonesia, January 1, 2019 in this photo taken by Antara Foto.
As a spectacular New Year fireworks display lit up the Sydney sky at midnight, a giant typo was beamed onto a Harbour Bridge pylon, telling the crowd it was still 2018.
Being together with loved ones is essential for a happy transit to the new year, as is wish making.
Participants believe the ceremony - symbolising death and rebirth - helps rid them of bad luck and allows them to be born again for a fresh start in the new year.
Fireworks explode in front of Malaysia's landmark building, the Petronas Twin Towers, during the New Year's celebration in Kuala Lumpur, Malaysia. This year will be the 70 anniversary of the founding of the People's Republic of China.
The night included more references to unity and inclusivity through music.
Officials have urged centralized fireworks displays to discourage wild and sometimes fatal merrymaking.
During the lights show the names of the French football team that won the World Cup this year were projected onto the Arc de Triomphe.
Thousands of people turned up at the Fort Kochi beach in Ernakulam where a big Pappanji (Santa Claus) was set on fire at the stroke of midnight.