What was built by Micaela Almonester de Pontalba in the 1840s?

Micaela Almonester de Pontalba is renowned for constructing the Pontalba Buildings, which were completed in the 1840s. These famous structures are located on Jackson Square in New Orleans and are among the oldest cast-iron building façades in the United States. The two buildings, facing each other across the square, contain residential apartments on the upper floors and commercial spaces on the ground level. They were pivotal in shaping the architectural style of the French Quarter, showcasing the influence of European designs adapted to the local context.

The Pontalba Buildings not only reflect the aesthetic of the period but also mark a significant development in the urban landscape of New Orleans, contributing to the city's reputation as a hub of culture and commerce. Micaela Almonester de Pontalba's initiative and vision in creating these buildings are celebrated as a key part of New Orleans' historical narrative. Thus, the selection of the Pontalba Buildings as the answer highlights her important role in the city's architectural heritage.