For a day out from Lafayette, the Pentagon Barracks Museum offers a look at the history of a former military complex on the Louisiana State Capitol grounds in Baton Rouge. Its Capitol-district setting makes it easy to consider alongside nearby civic and history landmarks.
- Location: State Capitol grounds, at State Capitol Drive and River Road.
- Historic name: Old United States Barracks.
- Driving approach: I-10 drivers use I-110 North and Exit 1-E; I-110 South drivers use the same exit.
- Visitor access: Confirm current museum access before setting out.
The museum and its historic setting
The Pentagon Barracks is a complex of buildings on the state Capitol grounds in Baton Rouge, at the corner of State Capitol Drive and River Road. It is also known as the Old United States Barracks.
The site’s military history reflects Louisiana’s secession-era transition. The United States Army occupied the Baton Rouge Barracks and Arsenal until January 1861. That month, Louisiana seized the post and transferred operation of the arsenal to the Confederate States of America.
The Capitol complex map places the Governor’s Mansion, Arsenal Museum, State Capitol and Pentagon Barracks in the same area. That makes the barracks a useful anchor for a short outing focused on Baton Rouge history and civic landmarks.
Opening information and visitor access
Confirm that the Pentagon Barracks Museum is open to visitors before planning your stop. A map listing gives the address as 702 River Road, Baton Rouge, LA 70802, but an address listing does not confirm public access or opening hours.
For a nearby museum with confirmed visitor information, Louisiana’s Old State Capitol describes itself as a museum with free admission. Its optional “Ghost of the Castle” film costs $2. You can treat it as a separate stop in the Capitol district, rather than assuming the same admission or access rules apply at the barracks.
Parking information for the Old State Capitol includes a limited number of accessible spaces in the lot behind the building, metered street parking and garages at the River Center and at Convention and Third streets. These details apply to the Old State Capitol, not necessarily to the Pentagon Barracks Museum.
How do you drive from Lafayette to the Pentagon Barracks Museum?
From Express Inn, drive about 4 minutes to Lafayette city centre, then take I-10 toward Baton Rouge. The Louisiana Legislature’s directions say drivers coming on I-10 should take I-110 North toward downtown Baton Rouge, then exit at Capitol Access Road/Department of Transportation and Development, Exit 1-E. From I-110 South, take Capitol Access Road, Exit 1-E.
Following the Capitol directions, you pass the Governor’s Mansion and cross a small bridge over Capitol Lake on the way toward the State Capitol.
Public parking is available on Spanish Town Road and streets to its south, as well as in parking lots off River Road. The Governor’s Mansion, Arsenal Museum and State Capitol are nearby options to pair with the barracks, subject to current access arrangements.
Before setting out, check the official site before you go for current visitor access and any practical updates. The museum’s location is clear, but the address listing alone does not establish whether the museum is open.
A short historic-district itinerary
Start with the Pentagon Barracks area, then add nearby Capitol landmarks if access and opening arrangements suit your plans. The Governor’s Mansion, Arsenal Museum and State Capitol are identified on the Capitol complex map alongside the barracks.
Keep the Old State Capitol as a distinct museum stop: its free admission and optional $2 film are specific to that museum. If you want to extend the day beyond the Capitol district, Baton Rouge also has LSU’s Tiger Park; a guide to a Lafayette day trip to LSU’s Tiger Park can help you consider that separate destination.
Planning the return trip
Allow time to retrace the Capitol-area roads and reach the route back toward Lafayette. The available directions describe the approach into the Capitol complex, while the exact return route depends on where you park and your onward navigation.
Express Inn is in Lafayette, and Baton Rouge is a regional outing from there; the hotel’s actual route and travel time to the museum should be checked before you plan the day. It offers a two-star room in Lafayette.
FAQs
Where is the Pentagon Barracks Museum?
It is on the grounds of the state Capitol in Baton Rouge, at the corner of State Capitol Drive and River Road. A listing gives the address as 702 River Road, Baton Rouge, LA 70802.
Is the Pentagon Barracks Museum open to visitors?
The address listing does not confirm visitor access or opening hours. Check the official site before travelling to the museum.
What is the Old United States Barracks?
It is another name for the Pentagon Barracks complex. The site was occupied by the United States Army until January 1861, when Louisiana seized it and transferred operation of the arsenal to the Confederacy.
Is there another museum nearby?
Louisiana’s Old State Capitol is a museum in the Capitol area, with free admission. Its optional “Ghost of the Castle” film costs $2.