This stop is a railway station, as Orsay was at the end of the railway line before it housed all the nineteenth century European artistic movements. The thousands of visitors who visit the museum each day cause a bit of disturbance in this secretive, discreet quarter. The magnificent mansions built by the nobility in the eighteenth century are now mainly used as ministries and embassies. Although the heavy doors behind which state decisions are taken and that only open for the coming and going of ministerial limousines, Faubourg Saint-Germain is not just the hushed paradise of the political and diplomatic world. A walk reveals the finest buildings in Paris in a quarter that is secretive even for Parisians.