A tourism counter in a town most of its own visitors could not point to on a map. A traveller who flew in specifically for this places a passport-sized card request form on the counter.
The clerk checks the date, checks that this is, in fact, the office's assigned distribution day, and disappears into a back room. She returns with a single card, glossy, printed with a manhole cover thirty metres outside the door: a leaping koi, ringed with the town's flower.
There is no charge. There is a limit of one per person, per visit, no exceptions, and a queue has formed behind this traveller made up entirely of adults with the same idea.
Start with the object nobody is supposed to look at. A manhole cover exists to be stepped over, not photographed — cast iron, load-rated, forgotten the moment your foot leaves it. In Japan, roughly 95 percent of the country's approximately 1,780 municipalities have quietly ignored that assumption and commissioned their own: a leaping koi for a river town, a castle in silhouette, a folk dance mid-step, a regional mascot doing something enthusiastic. There are tens of thousands of distinct designs nationwide, and almost none of them repeat.
The reason traces back to one civil servant and one uncomfortable statistic. In the mid-1980s, only around 60 percent of Japanese households were connected to a municipal sewer system, and the Ministry of Construction was trying to justify the enormous, invisible expense of digging up every street in the country to fix that. A ministry official named Yasutake Kameda proposed the only piece of leverage available: the sole part of the sewer network the public would ever actually see was the lid. So make the lid worth looking at. In 1986 the ministry ran a nationwide contest and published a book of the best twenty designs, with further design compendiums in 1987, 1989 and 1993, each one daring the next town to do better. It worked exactly as a competition works — municipalities that had never spoken to each other started quietly one-upping their neighbours' manhole covers, and a piece of plumbing became a small, permanent advertisement for civic pride.
For two decades that stayed a domestic curiosity, admired mostly by people already standing on it. Then in 2010 an American photographer and DJ named Remo Camerota published a book and companion blog titled simply Drainspotting, collecting his favourites into something a foreign audience could actually find. The word stuck as a hobby name, a hashtag, and eventually a small international subculture: people who plan Japanese city walks around which manhole covers they have not yet photographed, trading finds with strangers who will never visit the same street.
The Japanese sewage industry noticed the same thing Kameda had noticed in 1985 — that people will travel for infrastructure if you dress it up correctly — and in 2016 the Sewerage PR Platform (GKP) turned the impulse into an actual program: マンホールカード, manhole cards. Each card pairs a photograph of one specific cover with a short technical write-up on the back, issued only by the local water or sewer authority whose cover it depicts, in person, one per visitor, with no mail order. The rule is not an oversight. It is the entire mechanism — a card is worthless as a trophy unless getting it required you to actually go somewhere.
It has scaled well past its own premise. By the program's 28th release, in April 2026, the running total stood at 1,264 card designs from 769 municipalities and 4 utility groups, with roughly 23 million cards handed out since it began. New waves still arrive every few months, and each one sends a small, predictable spike of visitors to a sewer bureau counter in a town with no other reason to expect them that week.
Kameda's actual goal in 1985 was narrow and slightly cynical: make ratepayers feel good enough about an ugly municipal expense that they would stop complaining about the construction and the tax rise underneath it. He was not trying to invent tourism. Forty years later, that PR trick has produced 23 million collected cards, an international hashtag community, and foreign visitors deliberately routing their itinerary through small Japanese towns to stand in a sewer office queue. The propaganda worked so well it stopped being propaganda and turned into an actual industry — and the object doing all of the work is still, underneath the paint, a lid over a pipe full of wastewater.
- Around 95 percent of Japan's roughly 1,780 municipalities maintain at least one custom-designed manhole cover, most drawing on a local landmark, flower, festival or mascot.
- The 2016-launched manhole card program had issued 1,264 distinct card designs from 769 municipalities and 4 utility groups by its 28th release in April 2026, with a cumulative total near 23 million cards distributed.
- Cards are free but rationed: one per person per visit, collected in person only, at a specific counter on specific days — the same friction that turns a free paper card into something worth crossing the country for.