Zumthor's secret garden

Not long before it came down I visited the Serpentine Gallery Pavilion, which this year was designed by Swiss architect Peter Zumthor. A black box with dark cloistered corridors lead onto a rectangular garden space by Piet Oudolf.

Probably the most contemplative and least showy of any of the previous pavilions, it provides a context for introspection – a much needed counterpoint to so much signature architecture.