Parque Madrid Río

This guide to Parque Madrid Rio traces how a six-lane ring road that once split the Manzanares riverbanks got buried underground, after a 2005 international competition won by architect Gines Garrido. It covers the engineering of tunneling the highway without closing it, and how the river's wildlife returned once it ran freely again. Look for the twisted steel footbridge by architect Dominique Perrault, built as a seam stitching the two riverbanks together.