Many of the big London Railway termini have at least 17 platforms. For example, Waterloo and Victoria each have 19, Liverpool Street has 18 as does Euston, notionally, though 2 are being re-developed for HS2. Other cities have a large number of platforms as well. Edinburgh Waverley has 20, for example.
What a good idea then to use these to celebrate each of the sustainable development goals. Each platform could have information about its goal and targets and real-world information about how meeting the goals would improve people's lives.
Sadly, the Glasgow Central main station only has 15, but the problem is solved if the two low-level platforms are added in. What a nice way to welcome delegates to COP 26 in December.
Happy New Year, Network Rail. You can do this, you know ...