The Paris Metro and the service it provides are deeply intertwined into the fabric of the city. As the 4.5 million passengers who ride it every day will probably attest it's the quickest way around whether it's for work, for play or both. The metro's distinctive art-nouveau style is unmistakable and the plant like green wrought iron entrances topped with the orange orbs and Metropolitan signage designed by Hector Guimard which sprout up all over the city lead one down to the gleaming white tiled platforms to be whisked away around Paris. On my first trip to Paris I arrived into Gare du Nord and entered the dense maze that is the metro. Despite the crowds, the noise and the distinct odour of piss, I was in love. The kind of love which inspires one to risk life, limb and deportation to get up close and personal.