The Cabildo has Spanish arches with a French mansard roof
|Location||701 Chartres St., New Orleans, Louisiana|
|Architectural style||No Style Listed|
|NRHP Reference #||66000373|
|Added to NRHP||October 15, 1966|
|Designated NHL||October 9, 1960|
The original Cabildo was destroyed in the Great New Orleans Fire (1788). The Cabildo was rebuilt between 1795-99 as the home of the Spanish municipal government in New Orleans, and the mansard roof was later added, in French style. The building took its name from the governing body who met there — the "Illustrious Cabildo," or city council. The Cabildo was the site of the Louisiana Purchase transfer ceremonies in 1803, and continued to be used by the New Orleans city council until the mid-1850s.
The building's main hall, the Sala Capitular ("Meeting Room"), was originally utilized as a courtroom. The Spanish used the courtroom from 1799–1803, and from 1803-1812 it was used by the Louisiana territorial superior court. After the American Civil War, it was the home of the Louisiana Supreme Court from 1868-1910. The Sala Capitular was the site of several landmark court cases, including Plessy v. Ferguson.
In 1895 it was in a state of decay and proposed for demolition; artist William Woodward led a successful campaign to have the historic building preserved and restored.
In 1911 the Cabildo became the home of the Louisiana State Museum. The museum displays exhibits about the history of Louisiana from its settlement up through the Reconstruction era, and the heritage of the ethnic groups that live there.
The Cabildo was extensively damaged by a fire on May 11, 1988, which destroyed the cupola and the entire third floor,  but it was restored and reopened to the public in 1994. In 2005, the Cabildo survived Hurricane Katrina, which passed 30 miles (48 km) east of downtown, with relatively minor damage.
Days after Hurricane Katrina, the Louisiana State Police used the business offices of the Cabildo to set up what was called Troop N. The "N" was a designate for New Orleans. From the Cabildo, Louisiana State Troopers patrolled the streets of the city along with other state police agencies from New Mexico and New York.
- "National Register Information System". National Register of Historic Places. National Park Service. 2007-01-23.
- "The Cabildo". National Historic Landmark summary listing. National Park Service. Retrieved 2008-02-01.
- Patricia Heintzelman (June 30, 1975) National Register of Historic Places Inventory-Nomination: The Cabildo, National Park Service and Accompanying 2 photos, exterior, from 1968.
- "Louisiana State Museum" (history), Joseph F. Meany Jr., Karen W. Engelke, The Journal of American History, Vol. 83, No. 3 (Dec. 1996), pages 946-952, webpage: JSTOR-Cabildo.
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