When people walk through the busy streets of downtown Atlanta, they might not realize that an entire world exists just a few feet below their shoes. This hidden area is not a myth or a movie set. It is a real place with a history that spans over a hundred years. Often called the “city beneath the streets,” this underground world was created by accident during a time when Atlanta was growing faster than its roads could handle. Why the City Went Underground In the early 20th century, Atlanta faced a major problem: traffic. At the time, railroads were the main way people and goods