15 April 2016 Last updated at 10:49 BST
About 1,000 people were killed and bombs hit half of the houses in the city, leaving 100,000 people homeless.
Belfast was largely unprepared for an attack of such a scale as 200 German bombers shelled the city on 15 April 1941.
Many in Northern Ireland thought that Belfast was outside the range of the Luftwaffe.
The Germans, however, saw Belfast as a legitimate target due to the shipyards in the city that were contributing to Britain's war efforts.
Poor visibility on the night meant that the accuracy of the bombers was hampered and the explosives were dropped on densely populated areas of Belfast.
It was the worst wartime raid outside of London in the UK.

The competition will be extended to 64 teams, with sides from 16 of the 21 category one academies invited to join League One and League Two clubs.
In a change from the current knock-out format, there will be 16 regional groups of four for the opening round.
The proposals were approved at the English Football League's annual general meeting in Portugal this week.
Since the decision was announced Portsmouth, Accrington Stanley, AFC Wimbledon, Hartlepool United and Luton Town have released statements to confirm they voted against the trial.
EFL clubs approve academy 'Rooney Rule'
In a statement, the EFL said it was piloting the changes as part of their "ongoing commitment to creating more and better home grown players".
The changes will see the 16 academy sides evenly distributed throughout the groups alongside the League One and League Two clubs, with the competition continuing to run on a north/south basis until the final.
Each team will play each other once in the group stage, with the academy team getting just one home game. The knockout stages will be single ties apart from the semi-finals, where there will be two legs.
At the AGM, clubs approved a 'Rooney Rule'-style application process to try to improve the number of black and ethnic minority coaches in the game.
They also discussed the EFL's proposals to add a new division of 20 teams to the English pyramid - meaning that there would be 100 teams in a five-division structure, rather than the current set-up of 92 clubs across four tiers.
There are currently 24 teams in the Championship, League One and League Two, below the 20-club Premier League.
The final decision on those proposals will be taken in June 2017.

Keogh, 30, has been skipper of the Championship club since joining in 2012, apart from during Paul Clement's eight months in charge from June 2015.
The Republic of Ireland international, who scored in the abandoned EFL Cup tie at Grimsby on Tuesday, told BBC Radio Derby being reappointed was "amazing".
"Since I came through this door, it's been a great journey," he added.
"This club gave me the platform to captain my country and I will be forever grateful.
"My son was born in Derby as well so I will always have great affection for this club. It will always be in my heart.
"I have loved every second of it. It's six seasons and it has gone in a flash. You can see how much it means to me when I step on to the field. Hopefully we can make some great memories this season."

The midfielder fired in off the bar within seconds of coming on after latching onto Adam Armstrong's header.
Bradford, whose outside hopes of automatic League One promotion have now all but gone, went close through Josh Cullen and Jamie Proctor.
Their miserable night was completed when substitute Steven Davies was sent off for an off-the-ball incident.
The Bantams have dropped to fifth but stay in the play-off spots, while Coventry are 11th, six points shy of the top six, after their second win in four days.
Sky Blues boss Tony Mowbray told BBC Coventry & Warwickshire:
"Andy Rose is a good player. He has a great future at this club. I had a long chat with him before the game, as he was the only change from the weekend.
"He is a fantastic athlete. He is 6ft 2ins, he can head it, he can run, he can spray long passes. His time is going to come.
"The goals had dried up and we were losing matches, but I have always been proud of my players. I have never had to question their desire."
The Belfast blitz devastated a city that up until 1941 had remained unscathed during World War Two.
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Premier League academy teams will be allowed to play in the EFL Trophy in a one-season trial in 2016-17.
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Richard Keogh says Derby County will "always be in his heart" after being named as captain by boss Gary Rowett.
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Substitute Andy Rose scored with his first touch as Coventry City edged to victory over 10-man Bradford City.