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$treesway on HL2 skybox buildings

dancing buildings

will not work out of the box if the map that you load first does not have env_wind set up, like construct or flatgrass
you can bypass this by first loading up a map that does have env_wind, then the one that you want to play on
you also can use [this tool] to force spawn env_wind

[same thing but for trees]

maps used in the video
City 17 Trainstation
gm_nexus
Ohio apartment
ttt_univer_final
gm_abandoned_factory
gm baltic sunset