With 31,000 locations around the world, McDonald’s serves 58 million customers daily. Of course, you might think it’s most popular location is somewhere in the United States or at the very least Japan, but you would be wrong. The McDonald’s found in Pushkin Square in Moscow is actually the busiest in the world, serving what is believed to be around 40,000 customers every day. Fun fact – it was actually the first McDonald’s in Russia and opened just before the collapse of the Soviet Union.