The Lincoln Tunnel is one of the busiest tunnels in the world, connecting New Jersey and New York City. But did you know that the Lincoln Tunnel was not always the only tunnel in this location? In the 1920s, the New York City Tunnel Authority had planned to build a massive underground network of tunnels and waterways, known as the Deep Tunnel. This ambitious project aimed to alleviate New York's sewage and water management problems. However, the project was never fully completed, and the tunnels