At 15.5m tall and 170m long, the work of art is nearly 3,000 square meters in size.
Brazilian graffiti artist Eduardo Kobra painted this massive work of art along the promenade here and now it is recognised as the largest of its kind in the world.
The work, titled "We Are All One," shows five faces representing five main ethnic groups from five continents.
It means to resemble the official Olympic symbol - the five Olympic rings - the 39-year-old, Sao Paulo born muralist told Efe on Tuesday.
To accomplish the mural, it took 180 buckets of acrylic paint and 2,800 cans of spray paint as well as seven hydraulic lifts, Guinness World Records said in a statement.
The mural by Brazil's most renowned street artist became another attraction of the Olympic Boulevard.
Kobra began this work in early July with three team members and finished the gigantic mural on August 2, three days ahead of the opening ceremony of the 2016 edition of the Games.
