The famous modern cathedral in Barcelona, heavily influenced by architect Antoni Gaudi (1852-1926), that is still under construction after more than a century. The current estimate for completion of the building is 2026 -- the 100th anniversary of Gaudi's death.

We visited a couple of times and enjoyed watching the faces of people as they entered -- usually with a smile and a look of awe as they first saw the interior of the cathedral. We've traveled widely, and have seen many impressive structures -- but, at least so far, Sagrada Familia (the interior) is unique and the most beautiful building we have ever seen. I know that these photos can not do it justice.