(CNN) Revelers on the United States' west coast cheered the advent of the new year and said good riddance to 2016.

Celebrants in Los Angeles, San Francisco and Seattle -- eagerly turning the page on a year roiled by a bitterly partisan election -- caroused, sang, hugged, kissed and danced to standards like " Auld Lang Syne " as they welcomed the Happy New Year.

Tens of thousands of people packed LA's Grand Park and Music Center to welcome 2017 amid increased security after a deadly attack in Turkey early New Year's Day.

Let's do this #2017 pic.twitter.com/Tm1SYoLzEp

There were more than 600 law-enforcement officers and security personnel assigned to Grand Park. A perimeter was set up around the park with checkpoints at the entrances, but the Los Angeles Police Department said there were no credible security threats to the greater LA area.

San Francisco was also treated to a spectacular fireworks show and a beefed-up security presence

Happy New Year and happy 2017! #sanfrancisco #fireworks 🎉🍭🌸🎁🎄 pic.twitter.com/vSQs4mKRtH

Plainclothes and uniformed police patrolled the Embarcadero for the annual event.

Seattle shot from Alki....2017 pic.twitter.com/Nokueiy9Ki — Daniel Acosta (@DanielA92559262) January 1, 2017

New York

In New York's Times Square, party-goers cheered the new year and shouted in jubilation as the iconic ball dropped.

The New York Police Department remained vigilant and focused on protecting the gleeful crowds ringing in the New Year.

"We are closely following the developments regarding the night club shooting in #Istanbul #Turkey," the NYPD Counterterrorism Bureau tweeted.

Ben Von Klemperer took in the heightened security as the gates opened more than 12 hours before the big celebration.

Mother Nature cooperated -- somewhat -- with temperatures climbing from the high 30s to the low 40s during the afternoon hours.

Many bundled up on cordoned-off streets to claim their positions hours before Gotham's traditional midnight ball drop.

President-elect Donald Trump delivered a end-of-year message to his fellow Americans -- via Twitter, of course:

"Happy New Year to all, including to my many enemies and those who have fought me and lost so badly they just don't know what to do. Love!" he said.

Happy New Year to all, including to my many enemies and those who have fought me and lost so badly they just don't know what to do. Love! — Donald J. Trump (@realDonaldTrump) December 31, 2016

Across the Atlantic, European cities including Berlin, London, Paris and Rome stepped up security ahead of their celebrations, following truck-ramming attacks in 2016 on crowds in Berlin and Nice, France.

London

In London, tickets sold out for a dramatic pyrotechnics display above the River Thames, complete with a concert by singer Robbie Williams.

The New Year's Eve revelry was choreographed according to the world's more than 20 time zones -- some separated by one hour, others by 30 or 45 minutes.

Photos: New Year's 2017 celebrations around the world People celebrate 2017 as confetti flies over Times Square in New York City on Sunday, January 1. Hide Caption 1 of 24 Photos: New Year's 2017 celebrations around the world People watch fireworks explode over Copacabana Beach during celebrations in Rio de Janeiro, Brazil. Hide Caption 2 of 24 Photos: New Year's 2017 celebrations around the world People watch a light show by the Giza Pyramids and Sphinx in Egypt. Hide Caption 3 of 24 Photos: New Year's 2017 celebrations around the world Fireworks light up the sky above Funchal Bay on Madeira Island. Hide Caption 4 of 24 Photos: New Year's 2017 celebrations around the world People watch as fireworks explode over the Kremlin in Moscow, Russia. Hide Caption 5 of 24 Photos: New Year's 2017 celebrations around the world Fireworks are lit near the London Eye just after midnight in London, England. Hide Caption 6 of 24 Photos: New Year's 2017 celebrations around the world Fireworks illuminate the night sky over Cologne Cathedral and the Rhine River during New Year's Eve celebrations in Cologne, Germany. Hide Caption 7 of 24 Photos: New Year's 2017 celebrations around the world Fireworks explode at Burj Khalifa, the world's tallest building, in Dubai, United Arab Emirates. Hide Caption 8 of 24 Photos: New Year's 2017 celebrations around the world The Arc de Triomphe in Paris, France, is illuminated by a laser and 3D mapping display reading "Bonne Année" ("Happy New Year"). Hide Caption 9 of 24 Photos: New Year's 2017 celebrations around the world An Iraqi girl who fled the violence in Mosul, Iraq, poses with a mask on New Year's Eve at the Hasansham camp in northern Iraq. Hide Caption 10 of 24 Photos: New Year's 2017 celebrations around the world Fireworks illuminate the sky near the Petronas Twin Towers in Kuala Lumpur, Malaysia. Hide Caption 11 of 24 Photos: New Year's 2017 celebrations around the world Fireworks explode above Singapore's financial district at the stroke of midnight. Hide Caption 12 of 24 Photos: New Year's 2017 celebrations around the world North Koreans watch a fireworks display at the Kim Il Sung Square in Pyongyang, North Korea. Hide Caption 13 of 24 Photos: New Year's 2017 celebrations around the world Fireworks illuminate the city's skyline during a New Year's Eve celebration in Yogyakarta, Indonesia. Hide Caption 14 of 24 Photos: New Year's 2017 celebrations around the world Swimmers plunge into the cold water for the traditional New Year's Eve swim in Moossee, a lake in Moosseedorf, Switzerland. Hide Caption 15 of 24 Photos: New Year's 2017 celebrations around the world A couple holds balloons containing their wishes for the new year during celebrations at Prince Park Tower in Tokyo, Japan. Hide Caption 16 of 24 Photos: New Year's 2017 celebrations around the world A woman writes "2017" using a sparkler during New Year's Eve celebrations in Nyiregyhaza, Hungary. Hide Caption 17 of 24 Photos: New Year's 2017 celebrations around the world Pope Francis kisses a statue of an infant Jesus during a New Year's Eve vespers mass in St. Peter's Basilica at the Vatican. Hide Caption 18 of 24 Photos: New Year's 2017 celebrations around the world Sri Lankan Buddhist devotees carry various offerings at a temple on New Year's Eve in Colombo, Sri Lanka. Hide Caption 19 of 24 Photos: New Year's 2017 celebrations around the world The night sky turns to red over the Hong Kong skyline. Hide Caption 20 of 24 Photos: New Year's 2017 celebrations around the world People gather in central Vladivostok as Russia's Pacific coast celebrates the arrival of the new year. Hide Caption 21 of 24 Photos: New Year's 2017 celebrations around the world Fireworks explode over the Sydney Harbour Bridge and the Sydney Opera House as the arrival of 2017 is celebrated in Australia. Hide Caption 22 of 24 Photos: New Year's 2017 celebrations around the world The Sky Tower is seen among fireworks during New Year's Eve celebrations in Auckland, New Zealand. Hide Caption 23 of 24 Photos: New Year's 2017 celebrations around the world A Palestinian girl writes "2017" on the sand during the last sunset of 2016 on a beach in Gaza City on New Year's Eve. Hide Caption 24 of 24

Brazil

A spectacular firework show highlighted the night for revelers on the famous Copacabana Beach.

France

Happy new year 2017 from Paris ❤️ #hny2017 #paris #cnnnye A video posted by Grace Thansuwanwong (@kanttiegirl) on Dec 31, 2016 at 3:12pm PST

Thousands of people in Paris flooded the Champs-Elysées to watch the fireworks at the Arc de Triomphe.

Syria

In war-ravaged Syria, where skirmishes and airstrikes threaten a fragile ceasefire , 2017 arrived with the hope of peace.

Happy New Year World. May it bring peace to all Syria. pic.twitter.com/Yi8FYvjrVk — The White Helmets (@SyriaCivilDef) December 31, 2016

Russia

Fireworks soared above the Kremlin, bathing the Moscow River with splashes of red and yellow light.

Russia, on a major gift-giving holiday, welcomes 2017 with pyrotechnics over the Kremlin.

Fireworks light up are the Moscow River during new year celebrations in Russia.

United Arab Emirates

At midnight, light streaks erupted above and around the world's tallest building, Burj Khalifa, in Dubai.

Happy New Year #2017 #fireworks #burjkhalifa A video posted by Mara Colette 마라 (@__maracolette___) on Dec 31, 2016 at 12:01pm PST

Happy New 2017 🎉🎉🎉 #mydubai #dubaifirework A video posted by Eugenia (@applebums) on Dec 31, 2016 at 12:08pm PST

Happy New Year 2017 A photo posted by Ahmed_Naseeh (@the_innocent_guy69) on Dec 31, 2016 at 12:09pm PST

Bangladesh

In Dhaka, at 1 p.m. Eastern time, people marked the change in the calendar by lighting the traditional fanush, or sky lanterns fashioned from paper and bamboo.

#Class_Party #Faanushh #byebye2016👋 A photo posted by Kumar Swastik (@kswastik) on Dec 31, 2016 at 9:51am PST

Thailand

Revelers in Bangkok, about an hour earlier, counted down the seconds to 2017 amid cascading balloons and confetti.

Happy New Year 2017 ✨❤️⭐️🍾🎉🎊🎉🎉🎉🎉wish u guys a terrific year ahead !!! A video posted by Mint B. (@mintpb) on Dec 31, 2016 at 9:03am PST

Southeastern China

At midnight in Hong Kong, red streaks of light crisscrossed the night sky.

Fireworks explode over Victoria Harbour to celebrate the new year in Hong Kong.

Night gives way to a red sky over the Hong Kong skyline.

Philippines

At Manila's Ocean Park, Kevin Gener photographed shafts of crimson light rising over the marine theme park.

Best year so far! Thankful for my loving family, awesome friends and supportive colleagues who made it so exciting and full of life! New Year's Resolution, beat 2016! 😊🎉🎇 #newyear #2017 A photo posted by Kevin Gener (@kevingener) on Dec 31, 2016 at 8:15am PST

Riley Nolan marveled at the illuminated outlines of the Philippines' financial hub in the city of Makati.

Happy New Year! A photo posted by Riley Nolan (@rnolan54) on Dec 31, 2016 at 8:13am PST

Japan

Asimina Tzatha stood with revelers in Tokyo, cheerily dispatching the final 12 seconds of 2016.

HAPPY NEW YEAR from Tokyo Japan #newyears #lifestyle #tokyo #japan #shibuya #2017 A video posted by Asimina Tzatha (@asiminatzatha) on Dec 31, 2016 at 8:37am PST

South Korea

In Seoul, Boram Brian Kim took video of fireworks over the bustling streets of the South Korean capital. His favorite memory of 2016, he said, was "traveling in Europe and southeast Asia and getting to meet a lot of new people."

Australia

The palm trees and glass high-rises of Brisbane glowed under bursts of light.

And with that, we say goodbye to 2016 and hello to a wonderful #2017! Happy New Year! 💥😃#brisbaneanyday pic.twitter.com/bxo0qDfGm4 — Brisbane City (@Brisbane_City) December 31, 2016

In Melbourne, Instagram user Nathanael Campbell captured the magnificent, cacophonous crescendo marking the end of 2016. Still, despite the impressive display, he said: "I think winning my league bowling award in cricket was my highlight for 2016."

2017 #newyears #melbourne #fireworks A video posted by Nathanael Campbell (@ndacampbell) on Dec 31, 2016 at 6:44am PST

And more spectacular fireworks rocketed from the iconic Sydney Harbour Bridge and from barges on the water beneath.

Fireworks illuminate the sky over the Opera House and Harbour Bridge in Sydney, Australia.

The evening's pyrotechnics, a family display at 9 p.m. and a midnight show, included tributes to Prince -- in the form of a shower of purple rain -- and David Bowie, both of whom died in 2016.

Celebrating the start of the new year in style! #happynewyear #2017 #sydneyfireworks A photo posted by Cate Elliott (@cate_elliott) on Dec 31, 2016 at 6:37am PST

New Zealand

Among the first to celebrate was New Zealand, where flashes of light cut through the skies over Auckland's Sky Tower.

Happy new year everyone woo-hoo.... #2017 #letsgo A video posted by Bobby Kazemi (@bobbykazemi) on Dec 31, 2016 at 3:51am PST