The Western Islands are three man-made islands in the old harbour where boatyards, warehouses and houseboats still share the same water. They are Bickerseiland, Prinseneiland and Realeneiland, dug out of the shallows of the IJ from about 1613. Amsterdam made them to push its dirtiest trades off its own streets: tar boiling, herring smoking, salt refining and rope making, all of which caught fire easily. Prinseneiland alone came to hold more than a hundred of the roughly nine hundred warehouses in the city.
The islands are much quieter now than the rest of the centre. Warehouses have become flats, with their loading doors and hoist beams still on the fronts, and one small boatyard still hauls hulls out of the water, the last one working in the city. Houseboats are moored along the Bickersgracht and the Realengracht, lived in all year. Narrow wooden double drawbridges join the islands and are still cranked open by hand when a boat comes through. Almost everything here is private property, so this is a place to walk through rather than to go into.