One of the jewels of Art Nouveau, created when the Batlló family commissioned Gaudí to remodel an existing house. It was completely transformed, from the façade to the internal structure.
The interior courtyard is covered in ceramic tiles designed by Gaudí, dark blue at the top, shading through lighter blues to white at ground level. The top floor attic has an organic structure formed by Gaudí's characteristic catenary arches. On the roof terrace, the roofline looks like a dragon's flank, pierced by a marble cross with four arms and four sets of chimneys.