I mean, I'm not sure that the Sagrada Familia is a good example. It taking a long time to build was arguably part of the _point_, and was planned from the start.

I wasn’t sure if I should leave it in or not, it was more tongue in cheek than anything. The train between Madrid and Barcelona is a real example [0]

[0] https://english.elpais.com/elpais/2014/05/13/inenglish/13999...