Watch: Prince Harry helps raise Invictus flag atop Sydney Harbour Bridge
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The Duke of Sussex was also accompanied by Invictus Games athletes on the climb.
Britain's Prince Harry helped to raise the Invictus Flag on Sydney Harbour Bridge on Friday (October 19), after climbing the famous coathanger with Australian Prime Minister Scott Morrison.
The Duke of Sussex was also accompanied by Invictus Games athletes on the climb.
The opening ceremony of the Invictus Games will be held in Sydney on Saturday (October 20) and the event will run until October 27.
The games, founded by Prince Harry, are an international Paralympic-style event for wounded military veterans.
Australia's Prime Minister Scott Morrison officially welcomed Prince Harry and Meghan to Kirribilli House in Sydney.
The Duke and Duchess signed the guestbook at the prime minister's official Sydney residence, and also met with Australia's Opposition Labor Leader Bill Shorten and his wife Chloe Shorten at Admiralty House.
Crowds have thronged the streets for a glimpse of the royal couple, who are expecting their first child in the northern spring. The child will be seventh in line to the British throne.
Harry served in the British Army for 10 years, including two stints in Afghanistan, and now works with several charities, including supporting wounded soldiers. Along with his brother Prince William and his wife Catherine, Harry also set up a mental health charity.