Take a look at this amazing large-scale kinetic sculptures by Ben Trautman.
From the artist's web site:
My work combines the languages of industrial architecture and organic forms using intuitive engineering and experimentation. Inspired by cities, bones, mechanics and the movement of living organisms, I build sculptures suggesting creatures that inhabit the crevices of industrial decay. I work with dual languages, mass and delicacy or solidity and agility. Architecture inspires and hosts my work, provides context and scale, mass to inhabit or solidity to erode.
With a studio located in Oakland, California, he has made mechanical sculptures for The Franklin Institute in Philadelphia and The Bay Area Discovery Museum in Sausalito, California.
See more kinetic sculptures by Ben Trautman on his web site.