Leeds, Derbyshire, England, United Kingdom
Joseph Aspdin (1778-1855). Portland Cement, one of mankind's most important manufactured materials, was patented by Joseph Aspdin, a Leeds bricklayer, on 21 October 1824. Aspdin lived in this yard (then called Slip Inn Yard) and first sold his cement in Angel Inn Yard
Listen to the audio guide for Joseph Aspdin blue plaque Free on WIP — starts by itself when you arrive, even with the screen off