By John C. Maxwell
In 1882, construction began on Barcelona's Sagrada Familia. 129 years later, the cathedral remains unfinished! The church has already been named a UNESCO World Heritage site and attracts more than 2 million visitors each year. Yet, officials estimate another 15 years will be needed to complete it. That the project has attracted the interest of donors, architects, and builders for more than a century testifies to the powerful vision of its designer, Antoni Gaudí.