The Sint-Annabeekpolder is the name usually given to the land surrounding the city of Sint-Annabeek, which itself is built on a rather large terp. The Sint-Annabeekpolder was entirely reclaimed from the sea, starting with the plans made by Corneliszn Beekman in 1886. The lowest point in the polder, also the lowest point in Van Luxemburg, lies 19 metres below sea level.
The entire Polder is surrounded by levees which are often higher than 25 metres (measured from the lowest point in the polder), in order to keep water out of the agricultural zones in case of serious storms and rising water levels. Nowadays, the drainage inside the polder is managed by a fully automatic system of various pumping stations, adjusting the water levels if necessary, without human intervention. In total, the Sint-Annabeekpolder contains around 2000 km² of land, and is mainly used for agricultural purposes. Around the polder, several narrow bodies of water allow access to the sea for the many coastal towns that would have otherwise lost their connection with the ocean.
The last parts of the polder were reclaimed in 1984, nearly one hundred years after the initial plans. At first, the pumping was done through windmills, of which many still remain around the levees of the Sint-Annabeekpolder, but after 1945, steam and diesel-powered pumping stations were also introduced. Nowadays, the oldest parts of the polder have been re-used for the expansion of the city of Sint-Annabeek, a newly constructed neighborhood appropriately named 'Beekmanpolder'. Beekmanpolder consists of architecture that reminds of old Dutch cities, generally with building styles that stretch till the early 1940's. Other sections of the Sint-Annabeekpolder are primarily used for agriculture. Farmers operate in large, efficiently mechanised companies, and mainly keep livestock. Others farm flowers and plants in large greenhouses. This reinforces the images of the region of Sint-Annabeek (in its entirety) as the breadbasket of Van Luxemburg, and, partly, that of Maredoratica.