The Singing Ringing Tree.

Atop a barren hilltop in Lancashire, England, stands this most unusual musical sculpture. Designed by architects Mike Tonkin and Anna Liu, the “tree” is comprised of a series of pipes, cut and stacked in a spiral fashion. When the wind is blowing (and when isn't the wind blowing in England?!) a mesmerizing tone echoes through the hillside, like a lost sound effect from a Pink Floyd album.