Sea levels are rising due to climate change… but how much could they rise and how quickly? And how could this affect the world’s coastal cities.

Watermarks is an ongoing public art project that explores these questions. Between 6th and 12th February 2009, a series of large-scale ‘flood marks’ showing potential future high water levels were projected on to the facades of buildings across the centre of Bristol (UK). The Bristol projections were the first phase of Watermarks - further phases will extend the project to other cities in the UK and globally.