The Nottoway Plantation House, a sprawling mansion on a former Louisiana sugar plantation, was "the South's largest remaining ...

Images showed melted tables and burned furniture inside the Harrisburg residence after it was set on fire ... and the house covered in black soot. Kyle Mazza/Anadolu via Getty Other photos ...

Now a popular wedding venue, the mansion built in 1859 was "not only the largest remaining antebellum mansion in the South ...

It's unclear what caused the fire. Photos from the scene show the house scorched by the flames. See news happening? Send us your photos or videos if it’s safe to do so at https://www.wgal.com ...