Casa Manuel Arnús, Modernist house in Sant Gervasi-la Bonanova, Barcelona, Spain.

Casa Manuel Arnús, also called El Pinar, is a large modernist palace-castle by Enric Sagnier, built in 1903. Its central cross-shaped body has four tiled wings, flat-roofed side sections, a square tower with a pyramidal roof and an octagonal crenellated tower with a conical roof. A solid perimeter wall incorporates a porter's lodge, and the house stands within a pine grove.

Built in 1903 by architect Enric Sagnier, the house emerged during Barcelona's expansion of affluent residential neighborhoods beyond the city center. This period marked the height of Catalan modernism as an architectural movement shaping the city's upper-class districts.

The building holds official recognition as a Cultural Asset of Local Interest, showing how the neighborhood values and protects its modernist heritage. This status reflects Barcelona's commitment to safeguarding the architectural treasures that shaped its residential districts.

Casa Manuel Arnús stands in the Sant Gervasi-la Bonanova district, surrounded by a pine grove enclosed by rock walls; a solid perimeter wall carries the porter's lodge. The property belongs to the Asepeyo Foundation and serves as its headquarters, so the grounds are not open to the public. The building can be seen from the street, including the square tower with its pyramidal roof and the crenellated octagonal tower with a conical roof.

Architect Enric Sagnier was responsible for designing several important buildings across Barcelona and was a key figure in shaping Catalan architectural culture of his era. His work on this house demonstrates his influence on the quality of local residential design.