Line of the Fleet

King's Cross station concourse follows this curve of the Great Northern Hotel. The hotel was built 160 years ago following the curve of Pancras Road. The curve of Pancras Road followed the line of the now buried River Fleet, which was shaped by melting glaciers 12,000 years ago. http://londonist.com/2012/08/how-kings-cross-concourse-was-designed-12000-years-ago