. >> gijs van hensbergen: i mean, he wanted to write the history of the whole of the catholic faith in one building.d how extraordinary and how ambitious and how, in a sense, >> logan: gijs van hensbergen immersed himself in antonin years and wrote what's considered the definitive biography. he took us to see the nativitypart built while gaudii was alive. >> van hensbergen: it's the bible written in stone. >> logan: so, every single that you look at there, every detail symbolizes something real? >> van hensbergen: yeah, and that was the idea, that we spend days here-- me teaching you, if i was a what the symbolism was.ide is a wonderful, kind of spiritual boost. ceiling is a striking display of gaudii 's engineering genius. he wanted the interior of hiseel of a forest, because that's where he believed man could feel closest to god.ou look upwards, you can see gaudii 's columns branching out like trees. >> van hensbergen: trees are actually buildings, he said.row out a branch. famii lia today, that's exactly what happens with those bizarre,ok bizarre and eccentric, but the engineering b

how extraordinary and how ambitious and how, in a sense, megalomaniac that idea is. >> logan: gijs van hensbergen immersed himself in antoni gaudii's life for ten years and wrote what's c csidered the definitive biography. he took us to see the nativity faccade, the only part built while gaudii was alive. >> van hensbergen: it's the bible written in stone. >> logan: so, every single little thing that you look at there, every detail symbolizes something real? that was the idea, that we together would spend days here-- me teaching g u, if i was a priest, what the story was, and what the symbolism was. and once you get inside is a wonderful, kind of spiritual boost. >> logan: the ceiling is a striking display of gaudii's engineering genius. he wanted the interior o ohis church to have the feel of a forest, because that's where he believed man could feel closest to god. and when you look upwards, you can see gaudii's columns branching out like trees. >> van hensbergen: trees are actually buildings, he said. it knows where to throw out a branch. and if you look at t t sagrada famiilitoday, that's exac