Back in Valencia, the gvmt started building a new line, but then they abandoned it for over a decade. In some weekends with strong rains it floods. At least we got to see really beautiful pictures when someone entered and navigated with a boat! Multiple times across the years[2][3].
If you go a bit more local (smaller towns) and want to take a bus that is scheduled every 20 min, you go to the bus stop and hope that one will come within the next hour. We had to help a foreigner once that was gonna miss her flight since she was waiting for over an hour with no sight of a bus.
[1] https://www.youtube.com/watch?v=_BYW4YYqG5A
[2] https://web.archive.org/web/20130111154819/http://www.goodfe...