Yakatabune began not as tourism but as aristocratic real estate — floating rooms owned by court nobles in the Heian period, later adopted by Edo's merchant class as the city's most conspicuous form of leisure. By the seventeenth century, the Sumida River carried hundreds of these roofed boats. Edo was a water city. Its goods, its fish, its firewood and its gossip all moved by canal, and the pleasure boat was simply a merchant barge given lacquer, paper lanterns and a cook. Sumptuary laws periodically banned the largest vessels; the shogunate disliked visible wealth. The boats returned each time, smaller and better decorated. The Ryōgoku fireworks, first staged in 1733 to mark the end of a cholera epidemic, gave the fleet its defining night: hundreds of hulls packed gunwale to gunwale beneath the sparks. A yakatabune dinner cruise asakusa passengers board today descends directly from that summer ritual. The modern fleet is small. Wartime bombing destroyed most of the wooden boats, and postwar industrial pollution made the Sumida a river people avoided rather than dined upon. Water quality recovered slowly through the 1970s and 1980s. The Tokyo Yakatabune Association, reachable at +81-3-5825-5526, now coordinates the surviving operators from offices open 10:00–17:00 on Monday and Wednesday through Friday, closed Tuesday and Sunday. Its member boats depart from piers scattered along the Sumida River in Asakusa and downstream toward Shinagawa and Tokyo Bay. Architecturally, the vessels are conservative by design. A flat hull draws little water. A single long room runs the length of the deck, floored in tatami, lined with low tables, and hung with paper lanterns that read as orange smudges from the embankment. Sliding panels open the sides completely. The kitchen is a galley barely wider than a corridor, yet tempura is fried to order and served in sequence — the reason these boats are judged as restaurants rather than transport. Sumida River dinner boat tours pass beneath a catalogue of bridges: Azuma, Komagata, Kuramae, Ryōgoku, each painted a different colour under a 1920s reconstruction scheme. What sustains the tradition is contrast. Tokyo Skytree, 634 metres of steel lattice completed in 2012, stands directly above a form of dining that predates it by four centuries. Yakatabune dinner cruise asakusa operators trade on precisely that collision, and the persistence of Edo evening illumination on a river of glass towers is the reason the fleet still fills.