Are there still press houses in Champagne vineyards?

I have always read that some Champagne producers had press houses in the vineyards to immediately press grapes to avoid any chance of maceration, oxidation, early fermentation, etc. In the few times I have been to the region I haven't noticed any but I also wasn't really looking out for them.

I recently read that piece of trivia again and tried looking it up but couldn't find any pictures. Is this still true or was it ever true?