What if there were no skies? No stars?

Translucent tapestries created by the Brazilian artist Adriana Varejao, fall from the exterior of the aquatics centre as a combination of mud, rainwater and dead insects have contributed to the rust colour of the water in a practice pool. Photo: Pilar Olivares/Reuters.

Inside the Aquatics Stadium. Photo: Pilar Olivares/Reuters.

• Rio’s Olympic venues, six months on – in pictures, The Guardian, February 10, 2017