Find all 100 numbers — one to one hundred — photographed in the real world. On apartment doors, elevator walls, loading docks, painted curbs. Numbers that are just existing — not pointing anywhere, not doing a job. Once you learn to see them, they're everywhere. Log each find, add your photo, and watch your grid fill in — one overlooked detail at a time. For curious walkers, street photographers, and anyone who wants to see the world differently.
Start hunting →"Doesn't that sound awesome?"
— Rob Walker, author of The Art of NoticingWalk anywhere. Streets, subways, markets. Numbers are hiding in plain sight once you start looking.
See a 47 on a loading dock? A 12 stamped in metal? Photograph it in context — not cropped, not staged. The rule: the number should just be existing, not working or pointing anywhere.
Open the tracker, tap the number, upload your photo. Add a note and city so you remember where it was.
Fill every cell from 1 to 100. It takes weeks. Maybe months. That's exactly the point.
"The hunt was more satisfying and the reward was a new awareness of something previously invisible."
Valid: Numbers that just exist with no purpose — elevator floor plates, painted curbs, apartment doors, old signage, stamped metal, freight containers, worn concrete. They're there because they were put there, and that's all.
Not valid — working numbers: speed limits, prices, quantities on packaging, phone numbers, bus routes, nutrition labels, barcodes, seat numbers. These numbers have a job — directing, pricing, identifying. That disqualifies them.
Not valid — shapes: graffiti art, logos, or decorative designs styled to look like a numeral. If it's illustrative rather than numeric, it doesn't count as a find.
Not valid — part of a larger number: a 3 inside "37", "137", or a phone number is not a standalone find. The number must exist on its own, not embedded in a sequence.
The test: Imagine the number fell off. Would anyone be confused, lost, or unable to do something? If yes — it's working. Keep looking.
Context rule: Photograph the number in its setting. Don't crop it out of context — the environment is half the find.
No. The number has to already exist in the world. You're a hunter, not a maker. That constraint is what makes the hunt worth doing — it forces you to look at things you'd otherwise ignore.
No on both counts. Each find must be a distinct number at a distinct real-world spot, photographed separately. You cannot submit the same photo for two numbers — even if both appear in the frame. Crop shots and re-framed duplicates are not valid. If a building has a 14 and a 15 on adjacent doors, those are two separate finds — go back and photograph each one.
Not at all. Most people hunt opportunistically — you're going about your day when you spot a 67 on a garbage truck. Log it. The grid fills in a completely random order and that's part of the charm.
George Nelson spent months. Most people find the first 60 or 70 quickly, then hit a wall. The elusive ones — a standalone 1 that isn't buried inside 10 or 31, a clean 77, any number that seems common until you actually need it — can haunt you for weeks. That's exactly the point. There's no rush.
I came across George Nelson's numbers exercise in Rob Walker's The Art of Noticing and immediately wanted to try it. Nelson first wrote about it in How To See (1977) — a book about training your eye to actually look at the built world. Walker revived it forty years later as one of 131 exercises for seeing more carefully.
What Nelson discovered is that the hunt changes how you move through a city. You start noticing things you've been ignoring for years. The number 7 is everywhere once you're looking for it. Then you spend three weeks unable to find a 4. The Art of Noticing has been championed by designers, writers, and visual thinkers who care about attention and creativity — and this exercise is one of its most repeatable.
This tracker is a tool for doing that hunt seriously. Log your finds, add photos, tag your city, and watch your grid fill in slowly — the way Nelson's slide carousel did, one number at a time.