Downtown in Baton Rouge in East Baton Rouge Parish, Louisiana — The American South (West South Central)
Pentagon Barracks
Begun in 1819, construction dragged on for five years because of epidemic yellow fever. Its fifth building (hence the name "pentagon") soon collapsed into a pile of bricks. But the remaining structures survived both Civil War bombardment and nearly two centuries of mischief by stationed U.S. Army troops, LSU students and state legislators who still lodge here while in session. (Marker Number 4.)
Topics. This historical marker is listed in this topic list: Notable Buildings. A significant historical year for this entry is 1819.
Location. 30° 27.288′ N, 91° 11.322′ W. Marker is in Baton Rouge, Louisiana, in East Baton Rouge Parish. It is in Downtown. It is at the intersection of North 3rd Street and Spanish Town Road, on the right when traveling south on North 3rd Street. Touch for map. Marker is in this post office area: Baton Rouge LA 70802, United States of America. Touch for directions.
Regionally, this marker is in Louisiana’s Florida Parishes. It is also in the American South, specifically in the Deep South, and in the Great River Road Region. Globally, it is in North America, a Gulf of Mexico state, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once New Spain, the territory of the Mississippian Culture, the Louisiana Purchase, one of the Confederate States of America, and the Antebellum South.
Other nearby markers. At least 8 other markers are within walking distance of this marker: Bogalusa to Baton Rouge March (a few steps from this marker); The Amιdι Ardoin Lemon Tree (within shouting distance of this marker); Zachary Taylor (within shouting distance of this marker); Sigma Iota (within shouting distance of this marker); Fort San Carlos (within shouting distance of this marker); Pentagon Buildings (about 300 feet away, measured in a direct line); Ole War Skule (about 300 feet away); a different marker also named Fort San Carlos (about 300 feet away). Touch for a list and map of all markers in Baton Rouge.
More about this marker. Marker is number 4 of 10 of a series of walking tour markers on the Louisiana State Capitol grounds.
Also see . . . Pentagon Barracks. American Heritage website entry (Submitted on May 7, 2024, by Larry Gertner of New York, New York.)
Credits. This page was last revised on November 12, 2025. It was originally submitted on August 21, 2015. This page has been viewed 1,207 times since then and 32 times this year. Photos: 1, 2, 3, 4, 5. submitted on August 21, 2015. • Bernard Fisher was the editor who published this page.




