Prince Harry quietly celebrates 30th birthday after Invictus Games

WATCH: Britain’s Prince Harry turns 30 today. Once known as the party prince, Harry is growing up. CBS Alphonso Van Marsh is in London with the story

Prince Harry has reached a landmark birthday.

The British royal celebrated his 30th birthday out of the spotlight Monday following his hugely successful Invictus Games.

Harry, who is fourth in line to the throne, was the driving force behind the sporting event for wounded servicemen and women that took place in London over the past four days.

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Some 26,000 people turned out for a concert to close the games, which features Paralympics-style events.

READ MORE: Prince Harry proves to be a skilled latrine builder and drinks champagne from prosthetic leg

Performers at the Queen Elizabeth Olympic Park in East London included Foo Fighters – who closed the show Sunday night with their “The Best of You” – as well as Kaiser Chiefs, Ellie Goulding, Bryan Adams and James Blunt.

Following the finale, the prince’s birthday celebrations started with a beer with Britain’s Invictus team captain and double amputee Dave Henson, who was also celebrating his 30th birthday.

The milestone birthday means that Prince Harry is now entitled to the multi-million pound inheritance left to him by his mother, Diana, Princess of Wales, whose death in a car accident in 1997 shocked the world.

The inheritance is estimated to be worth around 10.7 million pounds (GBP).

Like his brother – heir to the throne, Prince William – Harry has been Eton educated and served in the army.

Harry’s passion for the various charities he works for, including clearing landmines and helping AIDS patients, are subjects that were close to his mother’s heart.