The foundation stone for The Sagrada Familia in Barcelona was laid on March 19, 1882. It has been under construction ever since. The first architect quickly resigned and the commission was handed over to Antoni Gaudí who devoted the last years of his life. This is a picture of The Sagrada Familia from around the time of Gaudi’s death in 1926 when the project was less than a quarter completed.
After that, the construction proceeded at a very slow pace as it has always been entirely funded through donationsr. These pictures I took in 2009 show the construction going on then.
There are now virtual visits of the interior online. I’m amazed at how much has been accomplished in 3 years.