The historic centre of the city of Cusco is full of history and unusual details. Amongst others, the seven streets that begin with the number seven. This number is considered sacred in many cultures. Among the Incas, the number 7 is linked, among other things, to the rainbow, one of the most important natural phenomena in their vision of the world. Moreover, coincidentally or not, the seven colours of the rainbow are represented on the flag of the city of Cusco, the ancient Inca capital.
