A monorail is a type of railway that runs on a single rail, typically elevated above the ground. This design allows for efficient transportation in urban areas, reducing the need for extensive ground-level infrastructure. Monorails are often used in theme parks, airports, and cities to connect different locations quickly and smoothly. Monorails can be powered by electricity, making them an environmentally friendly option compared to traditional trains. They are known for their sleek design and ability to navigate tight spaces, which makes them suitable for densely populated areas. Some famous examples include the Seattle Center Monorail and the Tokyo Monorail.