Thank you Lar, that is so interesting.....for instance, the information about the Ballast Office...the clock was connected to Dunsink Observatory by cable...ensuring that the clock lost no more than one second per week...I find that amazing.....I remember going to see the Pigeon House and the hotel and tried to imagine how busy they would have been, long ago....playing in the Phoenix Park we were under strict instructions not to go near the Magazine Fort....we knew that it used to house ammunition...in our tiny minds it meant that if we went near it that chances were that it would explode😂......speaking of John Pi(d)geon.....when I visited Canada, in northern Alberta there is a town called Jasper.....he had a lot in common with John Pi(d)geon......he took care of the trading post for the Hudson Bay Company......people came to get lanterns....long johns....shovels...etc..... so it became known as Jasper’s place.....they were on different continents...and both are still remembered after all this time.....I digressed🙄....about John Rocque....his maps are amazing.....what a cartographer/surveyor he was...huge respect for him.....didn’t have drones to fly to help him with his work.....thanks again🤩