Freemasons' Tavern
The Freemasons Tavern is the location of the Royal Astronomical Society's first meeting, a dinner attended by 14 men on January 12th, 1820.
Sources:
https://www.rmg.co.uk/stories/topics/astronomy-19th-century
Parent Map
Coordinates
Latitude: 51.514413548668
Longitude: -0.122541546789
Longitude: -0.122541546789