https://www.rmg.co.uk/press-release/royal-observatory-greenwich-celebrates-350th-anniversary
Royal Observatory Greenwich Celebrates 350th Anniversary | Royal Museums Greenwich
2025 marks the 350th anniversary of the Royal Observatory's foundation by Charles II.
royal observatory greenwich350th anniversarycelebratesmuseums
https://www.ibtimes.co.uk/great-fire-london-350th-anniversary-25-key-facts-about-devastating-1666-blaze-1579174
Great Fire of London 350th anniversary: 25 facts about the 1666 fire | IBTimes UK
Sep 1, 2016 - The fire destroyed tens of thousands of homes and buildings over four days.
great fire of london