What is the most populous city in the world?

Tokyo, Japan, is the most populous city in the world, with a metropolitan area home to over 37 million people. As the capital of Japan, Tokyo is a bustling hub of culture, technology, and commerce. Its dense population is supported by efficient public transportation systems, including extensive subway and train networks. The city blends modern skyscrapers with historical landmarks like the Imperial Palace and Senso-ji Temple. Despite its size, Tokyo is known for its cleanliness, safety, and unique neighbourhoods, offering a mix of tradition and innovation.