Official Cusco flag
Wikipedia: "The official flag of Cusco, Peru. It is a rainbow flag. The order of the colors is: Red, Orange, Yellow, Green, Sky blue, Blue, Violet.
The flag was introduced in 1973 by radio host Raúl Montesinos Espejo to commemorate the 25th anniversary of his Cusco station Tawantinsuyo Radio. In 1978, it was declared the official emblem of Cusco by mayor Gilberto Muñiz Caparó."
Kelvin Baggs Travel Photography