Gaudi’s Sagrada Familia
Antoni Gaudi, Church of the Sagrada Familia or Basilica i Temple Expiatori de la Sagrada Familia, 1882 (but still under construction). Barcelona, Spain.
Khan Academy Video and Article
Gaudi, Sagrada Familia (video)
Gaudi, Sagrada Familia (article)
How Stuff WOrks Article
Sagrada Familia Basilica Is Almost Finished, After Just 137 Years