[lubujackson]

An element of Gaudi's work I didn't appreciate until I was in Barcelona is the usage of biological structures in his architecture. You can see somewhat in the image looking at the ceiling, but the columns really do evoke the sense of being in a forest of pure white, towering trees with the ceiling as its canopy.

[yupitsme123]

This ties in with the Art Nouveau movement which he was a part of. If you look at paintings and other architecture from the time period, there are lots of references to nature and "organic" shapes.

[Earw0rm]

The Passion Facade, marking Christ's crucifixion and death, resembles a skull; the Nativity facade is an, ah, biological representation of birth.