About one million tourists go to Barcelona every year, just to visit the Gaudi's Church. This unusual church has a strange history. Gaudi was born in Spain in 1852. He had to work and study at the same time. He often missed classes because he had to work, but one day he designed a very unusual showcase for an exhibition in Paris. People began to give him work. He designed houses, offices and gardens. They were all very unusual. He was soon rich and famous. Then a rich bookseller said, 'Will you build a church for the poor people of Barcelona? I will pay. I will build schools and workshops, too. They will help the people.' 'I will do it,' said Guadi. He worked for forty years, but he could not finish the church. It was too big. He needed $10, 000, 000. He gave all his money to the church. He was poor again when he died in 1926, and only the front part of the church was finished. Now, architects, engineers and tourists from all over the world like to come and see the church, which is very strange, very modem and very revolutionary. The best title which fits the passage best is ______.