The Casa Wiechers-Villaronga is a Neo-classical style mansion in Ponce, Puerto Rico designed and built in the early twentieth century. The house was acquired and restored by the Institute of Puerto Rican Culture and now operates as the Museo de la Arquitectura Ponceña (Museum of Ponce Architecture). The house sits in the Ponce Historic Zone. The Villaronga Residence is an outstanding example of the Classical Revival style in used in Ponce designs in the early part of the 20th century and is one of two residences still standing of a series of houses designed and built by Alfredo B. Wiechers, so important to the architectural and cultural heritage of the city of Ponce.