That's a super cool dataset. It does drive the more philosophical question of "what constitutes a building" though. Looking at the map, it seems that large li

That's a super cool dataset. It does drive the more philosophical question of "what constitutes a building" though. Looking at the map, it seems that large liquid storage tanks count as buildings, but pipelines do not. Other large industrial facilities (e.g. distillation towers) seem to be hit-or-miss. Docks and other offshore platforms seem to be missing although it wouldn't surprise me if there are intellectual property or security issues around some of these things. Edit: The statue of liberty counts as a building, but the map seems a little bit confused about various Washington DC monuments. Edit2: Amphitheaters seem hit-or-miss. Playground structures and pools seem to be out.