Pontalba Buildings, National Historic Landmark architectural complex in French Quarter, New Orleans, Louisiana.

Pontalba Buildings are two matching four-story red brick structures facing each other across Jackson Square, each spanning an entire city block. Ground floors hold shops and restaurants while upper levels housed residences, creating a layered urban composition.

Built between 1849 and 1851, these structures introduced a new technique to the region's urban architecture. They were the first to employ decorative cast iron galleries as a defining element for residential buildings in the city.

The buildings carry the name of Baroness Micaela Almonester Pontalba, who financed them between 1849 and 1851 at a cost of over $300,000. Her intertwined initials, "AP", appear in the cast-iron panels of the first-floor balustrade, a detail visitors can pick out while walking the galleries. Truman Capote called them "the oldest, in some ways most somberly elegant, apartment houses in America" in his short story "Hidden Gardens."

The upper building faces Rue St. Peter upriver from Jackson Square; the lower building faces Rue St. Ann. Ground floors hold shops and restaurants, and the upper floors are rented apartments, so sightseeing is limited to street level. Look for the intertwined 'AP' initials in the first-floor cast-iron balustrade.

The distinctive cast iron balconies display the initials 'AP' honoring Baroness Micaela Almonester Pontalba, who designed and funded the entire project herself. This was remarkable for the era, as women rarely served as developers of major urban complexes.