From the Sint Antoniessluis you have a beautiful view over the Oude Schans with the Montelbaanstoren. The sloping house on the sluice was built in 1695 as a lockkeeper house and is a protected national monument. The house is currently used as a cafe. The locks still regulate the outflow of the river water from the Amstel via the canals to the IJ. In this way, the water in the canals is regularly refreshed. De Oude Schans is located opposite The Rembrandt House Museum in Amsterdam.
This old defense tower was built in 1516 and was intended to look out over the Zuiderzee. The Hertog van Alva (Duke of Alva) wanted to build a castle near the tower. He even had a name: Monte Albano, which was later corrupted to Montelbaanstoren. The nickname of the tower is Malle Jaap (Crazy Jaap), because the bells started to play spontaneously at the strangest times.