12 people were killed in the truck attack at the city’s busy Christmas market on Breitscheidplatz, next to Berlin’s main shopping street last year.
Now ISIS propaganda has vowed “Berlin will burn”, as jihadis threaten to bring chaos and destruction to the city.
One image, posted to Twitter by ISIS propagandists, shows a heavily armed fighter stood in front of the famous Brandenburg Gate, with the words: “Berlin will burn”.
Another shows an ISIS fighter walking through a church towards Father Christmas and a Christmas tree, along with the words “soon on your holidays” and “soon very soon”.
ISIS has also vowed to attack New York over Christmas.
One ISIS propaganda shows a church in flames with the words: “Wait for us, we meet at Christmas in New York”.
The fear mongering jihadis have vowed to attack targets in both cities, including at Christmas markets in a chilling repeat of the evil Berlin attack.
Threats have been ramped up in recent weeks, increasing after the failed pipe bomb attack at a New York bus station on Monday.
ISIS has also promised to attack London, Rome, Washington DC and Vienna over the festive period.
Christmas markets in Germany have been given extra security following the Berlin attack last year.
This includes concrete barriers to prevent vehicles from slamming into stalls in a repeat of the Breitscheidplatz attack.
There are also armed police officers mingling with crowds at the popular attractions, which bring in swathes of tourists to the country every year.
Security has been also stepped up at Britain’s Christmas markets this year.
Extra measures including armed police patrols, large concrete barriers and stop-and-search checks have been introduced at venues across the country.
Pedestrianised areas are blocked off to prevent vehicles ramming into crowds after ISIS fanatic Anis Amri, a Tunisian failed asylum seeker, killed 12 people and injured more than 50 when he ploughed a lorry through Berlin’s Breitscheidplatz last year.
Heavy police presences could be seen in London, Birmingham, Manchester, Leeds, Edinburgh and Bath over the weekend with armed officers patrolling the festive attractions.
Plain clothed officers will also mingle among crowds of revellers as part of the heightened security situation.
Superintendent Chris Hill, of Greater Manchester Police, said: “People’s natural response when they see extra security can sometimes be one of fear or concern, worrying that the extra measures mean that it’s more dangerous.
“I want to assure people that we are strengthening protective security as an extra precaution to keep people as safe as possible, and it should make people feel more comfortable and reassured about attending events like the Christmas Markets.”