Henry also however believes that the feat will be repeated by another side in the future.
Arsene Wenger’s side managed to go a whole season unbeaten during the 2003-04 campaign, the only side in the Premier League’s history to do so.
Jose Mourinho’s Chelsea side looked like they had the ability to do it last year but soon discovered how tough it is, and Henry says for him it is the Premier League’s best moment and will go down as something really special.
“My personal one has to be us being invincible, because it is an achievement,” he told Sky Sports.
“I know we didn’t win the league eight, nine times, like United did, but it will go down in the history of the league as an achievement and something really special.”
A feat that can be repeated
The Frenchman also admits that he and the rest of Gunners side didn’t expect people to still be talking about it after so many years.
That season has gone down in folklore, with many taking a revisionist history when discussing the campaign.
In truth, Wenger’s side were forced to fight to remain unbeaten with a number of hard fought draws throughout that year seeing them to both the title and the unbeaten label.
And Henry says the feat can be achieved again in future, and likely in a better way.
“We didn’t think people were still going to talk about it and talk about it the way they are talking about it,” he added.
“I think it will happen again. A team can do it in a better way: less draws, more goals, less goals conceded.”