TheChannelTunnel
Thetunnel,whichtheFrenchengineer,AimeThome,plannedtobuildundertheEnglishChannelin1858,wouldbeventilatedbytallchimneysbuiltabovesealevel.AnEnglishman,WilliamLowe,suggestedabetterplantwoyearslater.Passingtrainswouldsolvetheproblemofventilationinhisproposeddoublerailway-tunnelbecausetheywoulddrawinfreshairbehindthem.Thoughworkbeganforty-twoyearslater,itwasstoppedbecausetheBritishfearedinvasion.However,thetunnelwasofficiallyopenedonMarch7,1994.