People in The Prisoner costumes playing human chess
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The Prisoner location influence for No.6 festival in Wales

15 September 2012 Last updated at 10:50 BST

The festival circuit now runs from mid-spring until around October, with a different kind of event happening somewhere in the UK almost every weekend.

But while some of the bigger festivals are struggling, smaller gatherings in unusual venues are proving incredibly popular.

In Wales, one such festival has taken the inspiration provided by its setting - the village of Portmeirion, where The Prisoner was filmed - as far as it can.

Hywel Griffith reports.