The first section of the underground railway in the world opened on 10 January 1863 between Paddington and Farringtion Street in London. On that day 10,000 passengers were carried with trams running every ten minutes.At first, the people were afraid to travel undergound. They found the atmosphere a mixture of sulphur, coal dust and foul fumes from the gas lamps above and found them a danger to health.Most felt the “Iron Monsters” added to the mess and unhealthiness of the city. To make two miles of railways, 900 houses had to be destroyed. Streets were knocked up,pits and trenches dug. The underground railway led to a massive displacement of the London poor, specially during the two world wars.The underground railway broke down social distinctions but also created new ones.