It’s not only the Rijksmuseum celebrating in 2013: Amsterdam’s canals are 400 years old this year, but strolling along the waterways never gets old. The scenery includes Golden Age mansions dating to the 17th century, converted warehouses and narrow buildings that sometimes look like they’re ready to topple over sideways. The ring of canals starts with the Singel, which boasts a floating flower market. Then come the Herengracht, Keizersgracht and finally the Prinsengracht. Once you've worked up a thirst pounding the cobbled sidewalks, stop off for a drink in one of the ‘‘brown cafes’’ — small bars named for their dark wooden interiors — along the canals or in the web of narrow alleys that interconnect them. If you visit the Red Light District (and most tourists do), you'll discover that it’s also built around two historic canals, the Oudezijds Voorburgwal and Oudezijds Achterburgwal.