Today, Alfredo Wiechers' city residence, located in the Ponce Historic Zone and which he designed himself, is a museum, the Museo de la Arquitectura Ponceña.
After enriching his hometown city with some of the most architecturally exquisite buildings, he moved to Spain arguing political persecution by the authorities in the Island.
[5] He was the youngest of five children born to the German Georg Friederich Wiechers Kelm and Isabel Pieretti Marsaud, a Ponceña woman of Corsican ancestry.
[11] In 1908 Wiechers Pieretti married Ponce-born Carmen Gilet in Barcelona, and in 1910 he returned to Puerto Rico, settling in Ponce.
[13] In a short period of time, from 1911 to 1918, Wiechers was commissioned with various important buildings such as: the Logia Aurora, Club Deportivo de Damas, the Havana Theater, Banco of Ponce Building, and Santo Asilo de Damas Hospital among others, where he fully expressed the European Neo-Classical style which he had learned from Enric Sagnier.
[18] He also designed Villa Julita also known as Casa Ulrich, a residence located in Aibonito, which is listed on the National Register of Historic Places.
[23][24] He also designed Quinta Vendrell, Barrio Portugués, located at the junction of PR-143 and PR-123, Adjuntas, Puerto Rico, which is listed on the National Register of Historic Places.