Editing Leiderdorp (section)

=== Middle Ages ===
During the middle ages, the first permanent settlement appeared. The Rhine served as a connection between the sea and the hinterland, and there is evidence of trade taking place. During the [[late Middle Ages]] three castles were built in Leiderdorp, Huis ter Zijl (1260), Huis ter Does (around 1300) and Huis Berendrecht (around 1420).

In [[1396]] the Augustinian monastery Engelendael was founded. The monks copied books, cared for the sick and worked the fields. The monastery was abandoned in [[1574]], but its legacy is still present as the [[arterial road]] of Leiderdorp is called Engelendaal.