Edinburgh Festival

The Edinburgh Festival is a collective term for many arts and cultural festivals that take place in Edinburgh, Scotland, each summer, mostly in August. Though the festivals are put on by various organisations unrelated to each other, and so are officially separate events, they are regarded by many visitors as part of the same event; and together they form the largest annual cultural festival in the world.

The original, and still the largest, component festivals are the Edinburgh International Festival and the Edinburgh Festival Fringe; the latter is in its own right larger than any other similar event in the world.

http://en.wikipedia.org/wiki/Edinburgh_Festival