Garden of unearthly delights: inside the eerie underground lair for ‘master of mobiles’ Alexander Calder | Architecture | The Guardian
A shimmering metallic wall slices through a scrubby mound on the edge of a highway in Philadelphia, like a long steel blade cutting into the earth. Halfway along its length, this silvery barrier flips up, recalling the lid of a giant laptop, forming an entrance canopy that beckons you inside. As you ascend the planted knoll, you find great furrows gouged into the ground, jagged concrete sinkholes from which the peaks of colourful sculptures protrude.