Why Rotterdam Built a Square That Fills With Water

Why did Rotterdam build a public square that fills with water? Discover how the Benthemplein water square combines stormwater management with a place to play, sit and gather. Designed by De Urbanisten and opened in 2013, Benthemplein has three basins with a combined storage capacity of around 1.7 million litres. But the story goes beyond a big number: the square changes where rainwater runoff waits and when it moves through the wider water system. In this episode of Skyline Unpacked, follow rain from roofs and paved streets through visible gutters, into the basins and onward again. Explore why timing matters for urban flooding, how the shallow and deep basins differ, and how community input helped shape a space with two jobs. From Dutch water management to climate adaptation and urban planning, this is a closer look at infrastructure that makes room for both water and everyday life—including the capacity limits, maintenance and trade-offs that make the design work. Would you want a water square in your neighbourhood? Tell us where, and what people would use it for on a dry day. Subscribe to Skyline Unpacked for more stories about how cities work. CHAPTERS 00:00 A square with another job 01:05 How cities change the path of rainwater 02:15 Why timing matters for urban flooding 03:25 Follow the gutters at Benthemplein 04:35 Three basins, two different roles 05:45 What 1.7 million litres really means 07:00 A public space shaped around people 08:10 Where the stored water goes 09:20 Capacity, maintenance and real limits 10:35 One square, two jobs #Rotterdam #UrbanPlanning #WaterManagement