The ruined castle of Teylingen consists of and impressive Shell-keep, dating from around 1200, that is surrounded by a water-filled moat. The keep, added in the course of the thirteenth century, dominates the flat countryside. Beside the castle there used to be an extensive bailey, which was also surrounded by a moat. It was here that a comfortable and luxurious lodging was built in the fourteenth century.

The castle was originally the residence of the lords of Teylingen and served as a protection for the Rhine dike, and the road to Haarlem. In 1282 the fief fell to the counts of Holland, because the lords of Teylingen had no direct heirs. Later the castle functioned as a hunting lodge for the counts of Holland and as residence for the Head-Forrester. The most well-known of these Foresters was Countess Jacoba van Beieren, who lived at Teylingen during the last years of her life. She died there on 9 October 1436

During the Eighty-Years’ War – most particular during the period from 1572 to 1574 – the castle was heavily damaged. In 1605 the restoration commenced. After the roof was destroyed by a fire in 1676, the keep and encircling wall were left in disrepair.

The exhibited stoneware jugs -called Jacoba jug- were found in the castle moat.

With Jacobas stay at the castle they have not the slightest thing to do.