The fundamental part of every modern city is public transportation. Many great towns in the world complete the network by establishing the underground rail system as their integrated-unity. The fact shows that there are three of the largest and busiest underground train system in the Europe. They are located in London, Paris, and Moscow.
The earliest subway was built in London. At that time, the city government stated the regulation that no railroads could go in the city except underground. The industry of this tunnel was made by engineer Marc Brunnel for the pedestrian way. Afterward, the project developed to be the railway system.
Paris instituted designing an underground train service to compete London's. The earliest zone of the system was not opened until in 1990. Meanwhile, Russia opened The Moscow Metro in 1935. It refers to the architecture of London Tube. When Stalin claimed the power, he utilized the stations as showcase of Russian art, culture, and technology. The stations consist of statuary, painting, and mosaics.