And this is the first time that I've heard of La Sagrada Familia being an embarrassment. Think how embarrassing Cologne Cathedral must be!
The Sagrada Familia isn't embarrassing as a structure, but it IS embarrassing that, even with modern technology, it's taken so long to build it. Plus, many of the models and plans that went along with it were destroyed during the Spanish Civil War, which I'd say is pretty embarrassing.
As for the other ones, I think they're all pretty fair game.