reading the signal…
Signals / Object / Street-level imagery
in Hemer, NW·counted·34 all time
A bunker is a fortified shelter or underground structure, typically made from concrete, earth, or reinforced materials.
Counted, not streamed: Bunker has no time series, so it is read as a footprint across places. All-time count by city.
Things that physically exist: street furniture, signs, buildings. All-time counts.