The canal ring is usually walked along the water; the better idea is to walk across it. Under three kilometres, one clean line cutting the Singel, Herengracht, Keizersgracht and Prinsengracht at right angles through the negen straatjes — the nine little streets that stitch the rings together.
Start at the Koningsplein and step onto the Singel, the old moat. Then west across each canal in turn: Wijde Heisteeg, Huidenstraat, Runstraat — three short lanes, each a different width, each crossing a bridge with a fresh view down the water. The streets are full of small specialist shops, but the walk isn't about shopping; it's about feeling the city's plan in your feet, the way the scale drops from grand canal to narrow lane and back every hundred metres.
Halfway, on the Keizersgracht, the columned facade of Felix Meritis — built in 1787 for a society devoted to art and science. Stand across the water for it. Then the Runstraat delivers you to the Prinsengracht; turn north and walk until the Westertoren rises ahead. End at the Westermarkt.

