The London Underground, also known as the Tube, is a vast network of trains that runs beneath the city of London. It is one of the oldest and most famous underground rail systems in the world, first opening in 1863. The Tube has 11 lines and serves 272 stations, making it a convenient way for millions of people to travel around the city every day. Riding the Tube is an essential experience for both locals and tourists. Each train is marked with a distinctive color-coded line, and the stations are often adorned with unique designs. The London Underground is not just a mode of transport; it’s a symbol of the city’s history and culture.