La Pedrera (also known as Casa Mila) was the final civil work by architect Antoni Gaudi before he engrossed himself in La Sagrada Familia. It was commissioned in 1906 by Pere Mila.
Some fun with tilt-shift timelapse video:
YouTube - Full size video.
Original - A view of Tibidabo through one of the rooftop arches.
Original - Some of the hundreds of brick arches in the attic of La Pedrera.
Original - An all wooden phonograph.
Original - Ring ring.
Original - A view down Passeig de Gracia.
Original - A delicious plate of cured meats for lunch.