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- Denmarkâs EKKO Pavilion Records the Voices and Footsteps of Visitors Navigating its Spiral Path Sat, 3 Nov 12, 1:02amRead the rest of Denmark’s EKKO Pavilion Records the Voices and Footsteps of Visitors Navigating its Spiral Path Permalink | Add to del.icio.us | digg Post tags: eco design, EKKO, green design, interactive...