The Channel Tunnel, the longest undersea tunnel in the world, was constructed in 1994 and made life of many British and French people easier as they could move from Kent to Coquelles in about 35 minutes.
The first person to propose this idea was Albert Mathieu. In 1802, Mathieu showed his plan to Napoleon Bonaparte. His plans consisted of two underwater tunnels with an artificial island halfway between the two countries.
Although Napoleon liked the idea, nothing came of it. There were two other attempts to revive this plan, but the final decision was taken in 1987 – the starting point of the railway tunnel’s construction.