If someone asks you what the best way of travelling from London to Paris is, you could suggest flying, taking the ferry or going through the Channel Tunnel. The "Chunnel," as it is known, opened in 1994, and more than 200 million people (1) ... it. Since 2000, pets have also been able to travel. So how did one of the wonders of modern engineering come about? The first plan to connect mainland Britain with France via a tunnel (2) ... in 1802 by a French engineer. He wanted horse-drawn carriages to carry people through. Napoleon III later considered a tunnel, but thought it was too expensive. He was right  — the modern "Chunnel" creators overspent by 80 per cent. The tunnels (two for trains and one for maintenance) (3) ... six years to build and are 50,5 km long. High-speed trains (4) ... since 2007. It (5) ... 35 minutes to travel the length of the Channel Tunnel. On a cheerier note, around 12 million roses (6) ... through the tunnel every year for Valentine’s Day.