Introduction
Casa Milà, popularly known as La Pedrera ("the stone quarry"), is a Modernista building designed by Antoni Gaudí on Passeig de Gràcia in Barcelona's Eixample district. Completed in 1912 as Gaudí's last civil work, it is famed for its undulating stone facade, sculptural rooftop chimneys, and iconic wrought-iron balconies, and is a UNESCO World Heritage Site.