Check out those kings! This is the Passion side of the building, designed by someone else after Gaudi was killed 40 years into it.
The building was started in the 1880's, and is perhaps halfway done now, although construction is going on at a rapid clip. Another 50 years? It really is an incredible place: nothing like any other cathedral. We as heathens happily paid our 10 Euros to the Church to get in and admire the handiwork and climb the staircases to become closer to God -- which is apparently exactly what Gaudi had in mind.