Preview: God's Architect

|Perhaps the world's most beautiful and unique church, the Sagrada Familia in Barcelona, has been under construction for more than 130 years, since genius architect Antoni Gaudi started working on it in 1883. Long after his death, builders are using modern technology to realize the master architect's vision. Lara Logan reports on Sunday, June 9 at 7 p.m. ET/PT.

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