Hamburg’s street trees, one sticker at a time

Field notes

The map is organized around individual street-tree records, with species, age, trunk circumference, and crown listed as available details. Its source notes name Hamburg’s street-tree register and ALKIS map data, and say implausible records such as future planting years are omitted. The album is stored in the visitor’s browser; the page also offers code-based saving and restoration. It says the map runs on its own server rather than an external map service.