Gaudí was one of the most brilliant men of the 20th century. Take this, for instance. I bet you'd have never guessed it is a chimney. Yep, Gaudí was unconventional. He was the embodiment of extraordinary, peculiar, and abstract - all into one. This is the roof of the most famous house he created - La Pedrera, also known as Casa Milà. Have you been inside or atop this masterpiece of Spanish architecture?