Old Louisiana State Capitol

Old Louisiana State Capitol
U.S. National Register of Historic Places
U.S. National Historic Landmark
Old Louisiana State Capitol
Location	100 North Boulevard, Baton Rouge, Louisiana, United States
Coordinates	30°26′48″N 91°11′21″W / 30.44657°N 91.18903°W / 30.44657; -91.18903
Area	4.6 acres (1.9 ha)
Built	1847–1852
Architect	Dakin, James H.; Freret, William A.
Architectural style	Gothic Revival
NRHP reference No.	73000862[1]
Significant dates
Added to NRHP	January 12, 1973
Designated NHL	May 30, 1974[2]

The Old Louisiana State Capitol, also known as the State House, is a historic government building, and now a museum, at 100 North Boulevard in Baton Rouge, Louisiana, U.S. It housed the Louisiana State Legislature from the mid-19th century until the current capitol tower building was constructed from 1929-32.

It was built to both look like and function like a castle and has led some locals to call it the Louisiana Castle, the Castle of Baton Rouge, the Castle on the River, or the Museum of Political History; although most people just call it the old capitol building. The term "Old State Capitol" in Louisiana is used to refer to the building and not to the two towns that were formerly the capital city: New Orleans and Donaldsonville.

The building was added to the National Register of Historic Places on January 12, 1973,^[1][3][4] and was designated a National Historic Landmark on May 30, 1974.^[2]