Macau: China Macau is an international free port, one of the most densely populated areas in the world, one of the four largest casinos in the world and the largest casino in Asia. Its famous light industry, tourism, hotels and casinos have made Macao prosperous and become one of the most developed and affluent regions in the world.
Las Vegas: Las Vegas is the first of the four major color cities in the world. About 30 million tourists come here every year. There are probably thousands of the best hotels in the world in Las Vegas, where hotels are synonymous with casinos. These hotels bring in a net profit of $4 billion a year.
Monaco: Monaco, a very small country, is a very small place. 1856, Prince Charles III of Monaco opened the first casino in the northern corner of the old city in order to solve the financial crisis. In memory of the prince, the region was named Monte Carlo, and since then Monaco has gradually become one of the richest countries in Europe.