- Eurostar speeds you through the Channel Tunnel, one of Europe's biggest infrastructure projects to date. The $15 billion Channel Tunnel makes the old dream of a ground link between Great Britain and continental Europe a reality for the first time since the Ice Ages. The tunnel consists of 3 interconnected tubes: 1 rail track each way plus 1 service tunnel. Its length is 31 miles, of which 23 ...www.raileurope.com/us/rail/eurostar/channel_tunnel.htm