(In 2003 I visited Barcelona and spent all day wandering around the mighty , the architectural masterpiece of Antoni Gaudí. It had been under construction since 1882, and at the time only four of had been built. In the basement there was a museum with plans, renderings, and so on, and I discovered the plans for what it would look like when it was finished. Then I waited 23 years, and now the moment has come. The largest and best of the spires is finished, and it does follow the plans I saw so...

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