‘Imagine the despair. Everything standing still… the world standing still.’

The National September 11 Memorial and Museum in downtown Manhattan opened exactly 10 years after the terrorist attacks of 11 September 2011. Footprint: Where the Towers Stood observes the rhythms of a day near the Memorial’s two square reflecting pools that mark the former location of the Twin Towers. Against a background of flowing water and busy city sounds, visitors – largely tourists, from all corners of the world – experience the place in a multitude of ways. There are tears. There are selfie sticks. Parents attempt to explain the the tragedy to children born long after it. Tour guides repeat their well-worn explanations of the Memorial. The site has become what the US filmmaker Sara Newens describes as ‘a tourist destination and graveyard at once’, and she encourages us to observe deeply, noting its strangeness, its solemnity and its many meanings.