The 1850 House is one of the apartments in the lower Pontalba Building. Madame Micaëla Pontalba, daughter of Don Andrés Almonaster y Roxas, built the long rows of red-brick apartments flanking the upper and lower portions of Jackson Sq. Today, knowledgeable volunteers from the Friends of the Cabildo give tours of the apartment (every 45 minutes or so), which includes the central court and servants’ quarters. There are period furnishings throughout.