Blue sky thinking: Robert Ashton visits Houghton Hall

‘Turrell has a lifelong fascination with light.’

'The group quickly settled in the Skyspace and fell silent, sitting back and looking up at the sky for a full hour.' | Photo: Skyspace, at Houghton Hall

I have a battered copy of Walton Hannah’s controversial exposé of freemasonry, Darkness Visible. Hannah was a clergyman, and was horrified at the strong religious undertones to some masonic rituals. He knew that many senior clergy were Masons and saw this as a conflict.

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