In an opening address, Hunt proclaimed that "culture is to Britain what the sun is to Spain", adding that Dickens and Shakespeare would be "very proud" of the Festival, which runs from 21 June to 9 September.
The London 2012 Festival will feature 12,000 events and performances involving over 25,000 artists from all 204 participating Olympic Nations. Chairman Tony Hall described it today as "the largest cultural celebration in our lifetimes".
There will also be comedy performances from the likes of Tim Minchin and Stephen Fry, as well as 'pop up' activities including Shakespeare readings from Mark Rylance and a giant bouncy castle rendering of Stonehenge from artist Jeremy Deller.
Cultural Olympiad and London 2012 Festival director Ruth Mackenzie said: "With new work from the best musicians, comics, artists, film makers and more, there will be arts events taking place in unusual places all over the UK that will showcase the best in international culture when the eyes of the world are on us this summer."