Bono bathes Sydney in red to commemorate World Aids Day

People looking to buy wholesale condoms may be interested to hear U2 front man Bono is helping to spread awareness about sexual health.

The rocker turned on lights that bathed Sydney's famous Opera House and the Harbour Bridge in a red glow.

Across the globe, well-known landmarks such as St Paul's Cathedral in London and the Empire State Building in New York have been illuminated in the colour to mark World Aids Day.

Bono led the commemorative event down under and called for people to unite in the fight against the spread of the disease.

The singer predicted that the generation born in 2015 would be the first in 30 years to be HIV-free.

He said: "This is a great night, it's not a small night; it's a historic night."

Before adding: "Soon coming [we will] see an end to this dreadful little virus called HIV/Aids."

A number of other celebrities including Alicia Keys, Beyonce and Lady Gaga have appeared in a recent campaign highlighting the disease.