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There will be a 41-gun salute in Green Park to mark Prince Charles' 70th birthday.
It will be fired by the King's Troop Royal Horse Artillery (KTRHA), and take place near the norther edge of the park, a short distance from Constitution Hill.
Important note: If you're a tourist then be aware that you're required by law to stand outside Buckingham Palace and sing him 'Happy Birthday'. And that is not a joke. You also have to buy him a birthday present. And give him the bumps.
Craig’s review of Green Park – “Green Park is just green grass and trees. There are no flowers, no rivers, no ponds, no lakes, no buildings, no little kids playgrounds, just a couple of hot dog burger stands and military monuments. But if you travel back a few centuries then this place had it all: a swamp full of dead lepers, exploding firework disasters, temples turning into burning infernos, a gen… continued”
Get a closer look at the Albert Memorial – First Sun of the month (Mar to Dec only) – Go inside the Albert Memorial's railings and see one of London's finest looking monuments from up close
Listen to a speech at Speakers’ Corner – Every Sun (around noon) – If you visit Speakers' Corner at Sunday lunchtime you can listen to an orator stand up and discuss whatever they like -- all in the name of free speech.
Sunday football on Hackney Marshes – Every Sun – Hackney Marshes is the home of Sunday league football, with over 70 matches played between dozens of amateur teams.
Be a zoo keeper for a day at London Zoo – Mon to Fri – Sign-up to be a zoo-keeper at London Zoo for a day and get close to the animals and help to feed them and muck them out
Volunteer to help out at Spitalfields City Farm – Every day – Spitalfields City Farm is a nice place to take your kids, but did you know that you can volunteer to help out on the farm?
Hyde Park Winter Wonderland – 22 Nov 2018 to 6 Jan 2019 – Hyde Park will be transformed into a magical Winter Wonderland with rollercoaster rides, a circus, ice rink and Christmas market.
Check out our guide to all the daily parades in London
Here are some more free events in London if you want a cheap day out
If you enjoy Green Park then you might like to visit Hyde Park (walk it in 18 mins or catch the tube from Green Park to Marble Arch), Kensington Gardens (catch the train from Green Park to Queensway), Regent’s Park (catch the train from Green Park to Regents Park), St. James’s Park (you can walk it 10 mins) and Victoria Embankment Gardens (walk it in 20 mins or catch the tube from Green Park to Embankment)
Disclaimer: Event details can change at short notice and you should reconfirm everything before making plans