Palacio Cabanellas, Art Nouveau building in downtown Rosario, Argentina.

Palacio Cabanellas is a six-level building at the corner of Sarmiento and San Luis streets in downtown Rosario, built in 1916 and clad in stone-like render. Its Catalan Modernisme facades carry forged-iron and copper crestings, and the corner dome is covered with small coloured glass pieces that give it lightness. Coloured tiles sit between the upper windows.

Francisco Roca i Simó, a Mallorcan architect influenced by Antoni Gaudí during his studies in Barcelona, projected the palace around 1914 for the businessman Juan Cabanellas. It was built in 1916 under the direction of Luis B. Laporte and clad in imitation stone. Cabanellas conceived it as a rental building with shops on the ground floor and five floors of housing, plus a grand hotel option that was never carried out.

The building is one of the few remaining examples of Catalan Modernisme in Rosario, a style brought by Mallorcan architect Francisco Roca i Simó, who had studied under Antoni Gaudí's influence in Barcelona. Its upper section and the spaces between the windows are decorated with ceramic tiles, while forged iron and copper ornaments crown the dome. The dome is covered with small colored glass pieces that give it luminosity.

A complete restoration in the mid-2000s repaired structural issues and restored the ornamental elements to their original appearance. The best viewing angle is from the corner intersection of Sarmiento and San Luis streets, where the full architectural composition becomes apparent.

In 2006 the Palacio Cabanellas was one of the locations of ¿De quién es el portaligas?, a film directed by Rosario-born composer Fito Páez and released in 2007. The building's Catalan Modernisme facades appear on screen alongside the city where Páez grew up.