The mayor of Westminster, central London, unveiled a plaque yesterday on the wall of 102 George Street.
This was in honour of Indian businessman Sake Dean Mahomed, who set up Britain's first curry restaurant in 1810.
The Hindoostane Coffee House was said to sell food "unequalled to any curries ever made in England".
Mahomed was born in 1759, and came to Britain in 1784.
The restaurant went bankrupt in 1812.
Britain now has around 9,000 curry houses.