In the Eixample district off the elegant boulevard of Passeig de Gràcia, the UNESCO-listed Casa Milà is Antoni Gaudí's most famous secular building. Casa Mila is also affectionately known as "La Pedrera," which translates to "The Stone Quarry" because the building resembles an open quarry. 

Built between 1906 and 1912, this flamboyant avant-garde dwelling looks more like a sculpture than a functional building. Every line of the natural stone facade is curved, with rounded windows and metal balcony railings twining around in plant-like shapes. Even the roof has an undulating shape complemented by the decorative chimneys.

The entrance to the building is on the Carrer de Provença, through a remarkable wrought-iron gate that leads to an inner courtyard. The building is supported by ribbed arches that were designed for load-bearing purposes, a feature that reveals Gaudí's genius as a structural engineer. 

Visitors may walk around the roof terrace for an up-close look at the strangely shaped mosaic-adorned chimneys. The roof area also rewards visitors with sensational views across the city, with the outlook extending to the Basilica de Sagrada Família in the distance.

Casa Mila houses the Fundació Catalunya cultural center that organizes events throughout the year. The monument is open to the public daily for visits, and audio guides are available. A welcome stop for tourists, the Cafè La Pedrera offers a relaxing place for a snack in a setting worthy of the venue.