A quirky environmental idea that began in the Netherlands has evolved into one of Europe’s most effective urban greening movements – and it is gaining momentum.
The initiative, known locally as the NK Tegelwippen (National Tile Whipping Contest), challenges municipalities to remove paving stones and replace them with plants, trees, and permeable soil. What started as a light-hearted competition has now become a serious policy tool in the fight against climate change and urban flooding.
From Novelty to National Movement
Since its launch in 2021, the contest has scaled rapidly. By 2025, organisers confirmed that well over 11 million paving tiles had been removed across Dutch towns and cities – surpassing earlier estimates and continuing to climb as new municipalities join each year.
Cities including Amsterdam, Rotterdam, and Utrecht have been among the most active participants, with local councils, residents, and businesses all contributing to the tally.
The competition runs annually, typically between spring and autumn, with live leaderboards tracking progress. Residents can log the number of tiles they remove via an app or website, making participation both measurable and visible.
Why It Works: Climate Pressure Meets Smart Design
The urgency behind the initiative is real. Much of the Netherlands lies below sea level, making it particularly vulnerable to flooding and extreme rainfall. At the same time, densely paved urban areas are increasingly prone to overheating during summer heatwaves.
By replacing impermeable surfaces with greenery, cities are seeing measurable benefits:
- Improved water absorption: Soil and plants reduce pressure on drainage systems during heavy rain.
- Cooling effects: Green spaces can lower local temperatures by several degrees.
- Biodiversity gains: Even small patches of planting support insects and birdlife.
- Health and wellbeing: Residents report more attractive, liveable streets.
Dutch climate agencies have linked “de-paving” directly to national adaptation strategies, aligning the contest with broader environmental goals.
Scaling Beyond the Netherlands
The idea is now attracting international attention. Cities in Belgium and parts of Germany have begun piloting similar schemes, while urban planners in the United Kingdom are increasingly exploring “de-paving” as part of sustainable drainage and greening strategies.
In the UK, where flash flooding and urban heat islands are growing concerns, local councils are experimenting with rain gardens, permeable driveways, and incentives to reduce hard landscaping – though none yet match the scale or public engagement of the Dutch model.
A System That Changes Behaviour
What makes the Tile Whipping Contest effective is not just the environmental outcome – it is the behavioural design behind it.
Instead of relying on awareness campaigns alone, the system makes the desired action:
- Visible – public leaderboards and social sharing
- Simple – anyone can remove a few tiles at home
- Rewarding – both socially and environmentally
- Collective – municipalities compete, but communities collaborate
This shifts the dynamic from obligation to participation.
Urban planners increasingly point to the initiative as an example of “choice architecture” – where the environment is structured so that the sustainable option becomes the easiest and most appealing one.
What Comes Next
Organisers aim to push participation even further, with future targets focused not just on the number of tiles removed, but on quality of green space, biodiversity impact, and long-term maintenance.
There is also growing interest in linking the programme with urban agriculture, community gardens, and citizen-led climate adaptation projects.
The bigger lesson is hard to ignore. When systems are designed well, behaviour follows.
The Dutch have not solved climate change – but they have demonstrated something powerful.
Make the right action simple, visible, and rewarding, and people will do it – at scale.