The last week I was in Austria and last Saturday, before I left for my holidays, I got four postcards: one from China, two from Vietnam and one from Andorra.
The card from China shows the Great Wall. The construction of the Great Wall started circa 220 BC when earlier fortifications were connected to a united defence system against invasions from the North. The Great Wall became the largest military structure of the World during the Ming dynasty. It has a historic and strategic importance and an architectural significance. Since 1987 it is on the UNESCO World Heritage List.
Thank You very much Ta!