Introduction
Kinderdijk is a village and polder area in the South Holland province of the Netherlands, home to 19 monumental windmills built around 1740 to drain the Alblasserwaard polder. Together, these windmills form the largest concentration of historic windmills in the Netherlands and one of the most recognizable images of Dutch culture. The site was inscribed as a UNESCO World Heritage Site in 1997 as an outstanding example of Dutch water management technology.
The Netherlands' relationship with water is the defining story of the nation — roughly one-third of the country lies below sea level, and without continuous water management, much of the western and northern Netherlands would be permanently flooded. The windmills of Kinderdijk represent a critical chapter in this story: they were built to pump water from the low-lying polder (reclaimed land) into reservoirs and canals, keeping the surrounding farmland dry and habitable.
Architecture & Design
- Total Windmills: 19
- Types: 8 round stone (bovenkruier) and 11 octagonal (grondzeiler)
- Built: c. 1738–1740
- Function: Water pumping (drainage)
Kinderdijk's 19 windmills are divided into two types: eight round stone "bovenkruier" windmills and eleven larger octagonal "grondzeiler" windmills. The round stone mills were built in 1738 and the octagonal mills in 1740, replacing an earlier system of smaller mills and horse-powered pumps that had proven inadequate. Each mill could pump approximately 1,000 cubic meters of water per hour, and the 19 mills working together could manage the water level of the entire Alblasserwaard polder.
The windmills are arranged in two rows along a canal, creating the distinctive visual pattern that has become one of the Netherlands' most photographed scenes. The mills worked in series — lower mills pumped water from the polder into intermediate reservoirs, and higher mills pumped it further up to the level of the river where it could be discharged. This cascading system allowed water to be raised through a total height difference of approximately 1.5 meters from the polder to the river.
Location & Setting
- Location: Kinderdijk, South Holland, Netherlands
- Region: Alblasserwaard polder
- Rivers: Junction of Lek and Noord rivers
- Distance from Rotterdam: 15 km east
Kinderdijk is located approximately 15 kilometers east of Rotterdam at the confluence of the Lek and Noord rivers. The polder landscape — flat, green, and crisscrossed with canals and ditches — is quintessentially Dutch. In every direction, the flat horizon is broken only by the silhouettes of the windmills, their sails turning in the constant wind that sweeps across the open landscape.
The site is easily accessible from Rotterdam by car, bus, or waterbus (a fast ferry service). The surrounding area is characteristic of the South Holland countryside, with dairy farms, reed beds, and waterfowl. The Alblasserwaard is one of the lowest-lying polders in the Netherlands, sitting approximately 1.5 meters below sea level, which underscores the critical importance of the drainage system that the windmills were built to support.
History & Construction
- Polder Drainage: Ongoing since the 14th century
- Windmills Built: 1738–1740
- UNESCO Status: 1997
- Replaced by: Steam and electric pumping stations (19th–20th century)
The Alblasserwaard has been inhabited and farmed since at least the 11th century, but as the land sank due to peat extraction and natural subsidence, flooding became an increasingly serious problem. By the 18th century, the existing drainage infrastructure was overwhelmed, and the polder board commissioned the construction of 19 large windmills to provide additional pumping capacity. The mills were built in just two years and remained the primary drainage system for over 150 years.
The windmills were gradually superseded by steam-powered pumping stations in the 19th century and electric pumps in the 20th century. However, the windmills have been preserved and maintained in working order. They can still be called into service as a backup during extreme water events, and several times a year the sails are set turning for demonstration purposes, creating a spectacular sight that draws thousands of visitors.
Cultural Significance
- Symbol: Dutch water management and cultural identity
- Working Mills: All 19 maintained in operational condition
- Heritage: UNESCO World Heritage Site since 1997
Kinderdijk embodies the Dutch national motto "God created the world, but the Dutch created the Netherlands." The windmills represent the ingenuity, cooperation, and relentless effort that transformed a flood-prone delta into one of the most prosperous and densely populated regions in Europe. Water management — the collective effort to keep the sea and rivers at bay — is considered the foundational act of Dutch civilization, and Kinderdijk is its most visible monument.
The name Kinderdijk (Children's Dike) comes from a legend about a great flood in which a baby's cradle was found floating on the water near the dike, pushed to safety by a cat. Whether or not the legend is true, it captures the emotional reality of life in a land below sea level — the constant awareness of water's power and the collective responsibility to manage it.
Visitor Experience
- Hours: Open daily year-round
- Mill Museums: Two windmills open to visitors
- Best Time: Spring (April–May) for tulips and optimal light
The Kinderdijk site consists of a network of paths and cycle routes that run alongside the canals between the two rows of windmills. The walk from one end to the other takes approximately 30 minutes at a leisurely pace. Two of the windmills are open to visitors: one is furnished as a working mill museum, showing the grinding mechanism and the miller's living quarters, while the other demonstrates the pumping mechanism that drained the polder.
The most magical times to visit are at sunrise or sunset, when the low light catches the windmill sails and reflects off the canal water. On designated "spinning days" (several times per year), all 19 windmills are set turning simultaneously — an increasingly rare sight that draws photography enthusiasts from around the world. The site is also popular with cyclists, as it connects to the Netherlands' extensive national cycle route network.
Key Facts
- Kinderdijk has 19 windmills built around 1740 to drain the Alblasserwaard polder
- The site became a UNESCO World Heritage Site in 1997
- All 19 windmills are maintained in working condition and can still pump water
- The windmills were built in just two years (1738–1740)
- The polder sits approximately 1.5 meters below sea level
Fun Facts
- The name Kinderdijk (Children's Dike) comes from a legend about a baby's cradle found floating during a flood, pushed to safety by a cat
- The windmills worked in series — lower mills pumped water to intermediate reservoirs, and higher mills raised it to river level
- Several of the windmills are still inhabited by families who serve as caretakers
- On spinning days, all 19 mills are set in motion simultaneously, an event that draws photographers from around the world
Final Thoughts
The windmills of Kinderdijk tell the story of a nation built by human will against the forces of nature. These 19 elegant structures, turning their sails in the wind above the flat polder landscape, represent centuries of Dutch ingenuity in the eternal struggle to keep the sea at bay. They are not relics of a bygone era but working monuments to a challenge that continues to this day — and in an age of rising sea levels, their lesson of collective resilience has never been more relevant.
