The Swansea and Mumbles Railway was the world's first passenger railway service , located in Swansea, Wales. Originally built in 1804 to move limestone from the quarries of Mumbles to Swansea and to the markets beyond, it carried the world's first fare-paying railroad passengers on the day the British Parliament abolished the transportation of slaves from Africa. It later moved from horse power to steam locomotion, and finally converted to electric trams, before closing in January 1960, in favour of motor buses. .At the time of the railway's decommissioning, it had been the world's longest serving railway and it still holds the record for the highest number of forms of traction of any railway in the world - horse-drawn, sail power, steam power, electric power, diesel and petrol.