#701: concrete, buildings, amazonia, navigators
, last check: Thu, 27 Aug 2026. Post history
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concrete
Guatemala relief map made with concrete in 1905, can still be visited at the Minerva Park in the capital
https://www.atlasobscura.com/places/map-en-relieve-relief-map -
buildings
All Great Britain buildings in a single shapefile (1.3G), covering 1.35% of the territory
http://www.statsmapsnpix.com/2017/09/buildings-of-great-britain.html -
amazonia
Evolution of Amazonian forests in Colombia, with graphs and stories
via @ibesora
https://colombia.infoamazonia.org/ -
navigators
Blue books were published between 1901 and 1929 to help drivers to navigate
via @jsenag
https://medium.com/mapbox/pathfinders-sketches-cartographers-at-official-automobile-blue-book-company-75118069047c
Raf