Land reclaimed from where water once was. Very fertile.
Barriers holding back water from places that are under sea level
The first dikes built in the Netherlands over 2000 years ago.
The process in which people built dikes to close in a section of water, then drain the water, creating more land.
What people do on the polders, causing it to sink a lot of times.
Largest port in the world
The Netherlands' capital
Netherlands' main flood fears come from this sea.
A network of dams that took 30 years in all to build.
The reason for making polders in he first place.
Export reason for the Netherlands to continue to protect their polders from the North Sea.
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.