Being part of the high-speed TGV rail network has helped Leeds' twin city of Lille become France's third most powerful financial, commercial and industrial centre.
The city's authorities have used its location on the TGV Nord line, connecting Paris with London and Brussels, as a catalyst for major growth.
A major commercial centre was developed around the new station, adjacent to the city centre and an ongoing continuing development strategy has resulted in new offices, public housing and a large conference and events hall in other nearby areas.
There have been complementary regeneration programmes across other parts of Lille, which high-speed rail has helped transform from an industrial city in decline, to a business and tourism success story.
Read the case study on Lille by Greengauge21