he was 31 when he started working on the sagrada famiÍlia.van hensbergen: he looked like a homeless person. his trousers were held up with string. his clothes were kind of frayed, and... because all he was interested in was the sagrada famiÍlia. i mean, that was every waking hour, to the point, at the end of his life, actually, where he was sleeping on the site. >> logan: gaudiÍ died suddenly t this intersection in 1926 when he was hit by a tram. the driver pushed him aside, mistaking the beloved architect for a tramp. >> van hensbergen: the photos show you these people kind of bereft of their builder, the builder of god. >> logan: after his death, the builder of god's plaster models continued to guide construction for the next ten years, until 1936, when the spanish civil war broke out. anarchists attacked the sagrada famiÍlia. this photo captures smoke billowing from its side. all those models gaudiÍ had spet years building were smashed to pieces. wow, these are all the original pieces that were picked up from his studio. >> mark burry: yup