10. St. Pancras International, London
Popularly known as London St. Pancras, St Pancras International is a central London railway terminus which is famous for its fine Victorian architecture. The Gothic façade of red brick is the significant and impressive footprint of the glorious era gone by. The station welcomes passengers arriving from Belgium, France and the rest of the UK to London. It took 20 years for the station to be completed. Finally, in 1868 when the structure was completed it was acknowledged as the largest enclosed space in the world.