Following this morning's story about Locog chair Sebastian Coe launching the programme, the Olympic Games organiser has realised a full line-up of events.
London Mayor Boris Johnson was also at the event and said:
"London 2012 is a grand celebration of sport, but it is also about much, much more. With Open Weekend you can channel that enthusiasm, harness that energy and unlock your creativity. So get out and about, explore and make it a real humdinger."
Key events include:
Coracle and Castles - Wales; build a coracle - a small lightweight boat at Cilgerran Castle.
Sport Caerphilly's Big Cheese Taster Sessions - Mid Glamorgan; Each taster sport session has a specific challenge attached.
Brewing Up - Bringing the Kettle to the Boil - Milton Keynes; part of IF: Milton Keynes International Festival 2010, get involved in finding out how many people it takes to play music to bring a giant carnival kettle to the boil. This project is part of the London 2012 Inspire programme.
Big Choir Day - Brighton; Unleash your inner singer and join the John Hancorn and the Brighton Festival Chorus to rehearse and perform in the historic Brighton Dome Concert Hall.
Intro to Stonemasonry - Souter, North East England; learn the craft and make your own stone sundial with the North England Civic Trust in Souter.
Sports on Wheels - Newcastle Upon Tyne; Wheelchair Basketball, Powerchair Football and Wheelchair Rugby taster challenges.
Sampad Arts Mela - Birmingham; learn a dance routine and perform it in one hour
Walsall Arboretum Relays - Walsall; take part in a 3k relay race through the park.
Jump London - Westminster, London; Take the Parkour / Freerunning challenge and learn to master your movement with Parkour UK.
Write Here, Write Now; Script Laboratory - Camden, London; write a play in an hour and improve a writer's latest play at the Hampstead Theatre
Two2Go - Hackney, London; Celebrate the two year countdown to the 2012 Games and get active by trying a new sport or dance at this community festival on Hackney Marshes.
Run the Square and Hetherset's Got Talent - fun run and talent contest in Hetherset, Norfolk.
Outdoor Festival of Chinese Culture - Cambridge - Chinese art and calligraphy challenge at the Fitzwilliam Museum.
Step Up Bradford - Join in the city's dance extravaganza.
Sheffield TRY-athlon - Sheffield; learn circus skills, including juggling, tightrope walking and hoola hooping.
SURGE a festival of physical performance - Glasgow - street art, physical theatre and circus challenges abound as the streets come alive.
Human Race - Edinburgh; discover the latest research in sport bioinformatics and sports medicine, take part in experiments and try out cutting edge technology such as speckle computing, a bionic hand and robots. This project is part of the London 2012 Inspire programme.
Bicycle Ballet - Manchester; Make your bike dance! Learn bicycle stunts and perform tricks to music. 80 cyclists are sought to train with the professionals for this exciting performance. This project is part of the London 2012 Inspire programme.
Frank Webb Fun Day - Crewe; take part in a multi-sport competition and try new activities.
Cornwall 2,012 second activity challenge - across the county; Get active by going to your local participating leisure centre for a minimum of 2,012 seconds or 34 minutes.
Roman Baths challenge - Bath; build a Roman arch, measure the Great Bath using Roman measurements and match the Latin names of countries to our map of the Roman world.
Pride and Prejudice - County. Down: read Jane Austen's Pride and Prejudice before enjoying a performance at Solitude Park, Banbridge.
‘Try it' sports event - Belfast: young people invited to sample over 15 sports from fencing to volleyball at the Ozone complex.
SO Festival - Skegness: a colourful carnival of dance, visual art, street theatre, world class performances, music and more.
Discovering the Dale - Derbyshire: an invitation to contribute to an instant art exhibition inspired by the wildlife and landscapes of Lathkilldale to represent the landscape and wildlife of the area through art. Part of Discovering Places Launch Weekend.
To leave a comment and let us know your thoughts.