I remember studying a strange weather station inside a metro station, together with two employees of the coop that hosts the coworking space I work at.

The metro station has one platform surrounded by two tracks, and I think this station is based on one in Vienna (Austria), because I saw a YouTube video of that at 4am the night before.

The weather station is made out of a 2 meter high pipe, installed on the wall along one of the tracks. A mess of pipes reminding me of a Rube Goldberg machine was transporting urine into the main pipe. We therefore had a urine pluviometer.

I also remember there being a CCTV camera installed under one of the tracks.