Casas Gemelas (Twin Houses), located between Calles 45 and 43 near the beginning of Paseo Montejo, were built in the grand Beaux Arts style in 1911 for brothers Ernesto and Camilo Cámara Zavala whose family wealth came from henequen plantations. The pair of French-style mansions were designed by Gustave Umbdenstock, who also built the Pont du Carrousel in Paris, commissioned by the engineer and architect Manuel Cantón Ramos, who also oversaw the building of the Palacio Canton. One of the properties was left unfinished until it was acquired by its current owner, Mario Molina. The second property was bought by Fernando Barbachano, whose family turned it into a museum, Montejo 495. They each have 10 bedrooms and eight bathrooms, as well as a basement and a half basement; an office, and a living room, among other spaces.