Designed by the well-known architect Blas Silva in 1913, the residence stands out among the great houses of Ponce for its aggressive incorporation of curvilinear forms and ornament.

Adapting the curves of the "Art Nouveau" to the persistent Neo-classicism of Puerto Rico and the recently born Creole vocabulary of Ponce, Silva succeeded in creating a movement in architecture which broke away from the traditional forms while remaining within them.

The traditional continuous raised verandah along the front facade is broken up into two and twisted out of its usual linearity into the curved forms preserved today.

Characteristic of the architecture to abound in Ponce contemporaneous to Castillo 34 is a profusion of appliqué, and eclectic combination and juxtaposition of shapes, particularly curvilinear, and a general ostentation of articulation.

In addition, the central entry is crowned with a plaster cartouche displaying the initials of the first owners, PF (Providencia Ubides and Federico Font).

A small masonry pinnacle is located above the cornice at each of the four corners of the mirador and a circular oculus with stained glass panels occupies each of the four sides.

Characteristic interior features of the house include: decorative native ceramic tile floors, intricate, pressed-tin ceilings in biblical motifs, and skillfully carved wooden fanlights.