South Polar Proximity System · SPPS-25

One number, read one digit at a time

The SPPS-25 spiral winds 16,777,216 times from pole to pole, far too fine to draw on a globe. Instead, watch what each digit of an address actually tells you.

drag to turn · tap to choose a place
© OpenStreetMap contributors
digits 1–7: which ring around the Earth digits 8–16: where along that ring