Shadows on the Teche stands as one of Louisiana's most significant antebellum plantations, a grand Greek Revival mansion situated on the banks of the Bayou Teche in New Iberia, approximately twenty miles south of Lafayette. The estate was constructed in 1834 by David Weeks, a wealthy plantation owner who capitalized extensively on the sugar cane industry that dominated the region during the antebellum period. The name derives from the massive live oak trees whose ancient branches cast perpetual shadows across the bayou waters and surrounding grounds. The plantation operated as a substantial agricultural enterprise relying on enslaved labor to maintain vast sugar cane fields that stretched across hundreds of acres of fertile Louisiana soil. The architectural design reflects the prosperity of the era, with soaring columns, ornate ironwork, and interior appointments demonstrating the wealth accumulated through sugar production and trade. Following the Civil War, when Union forces occupied the region, Shadows on the Teche underwent gradual decline as subsequent owners struggled to maintain the property and reestablish agricultural operations under dramatically changed economic conditions. The estate changed hands multiple times throughout the late nineteenth and twentieth centuries, with periods of abandonment alternating with restoration attempts. The mansion eventually became a museum property, preserved as a historical site dedicated to interpreting the antebellum South and the complex legacy of slavery upon which such estates were built. Restoration efforts have brought much of the original architecture back to functional condition, though the building's long history has left visible marks upon its structure. Paranormal activity at Shadows on the Teche has attracted considerable attention from researchers drawn to the mansion's historical significance and reported supernatural manifestations throughout the property. Staff members and visitors consistently report encounters with an apparition identified as Mary Moore, a woman dressed in a distinctive blue dress who appears near the garden areas and front steps of the mansion. Electronic equipment throughout the property experiences unexplained malfunctions, with electrical systems failing erratically in specific rooms during paranormal investigation sessions. Witnesses have reported hearing piano melodies from rooms where no instrument is present, along with children's laughter echoing through hallways. Temperature anomalies manifest in certain rooms, with localized cold spots appearing without explanation and vanishing mysteriously. The identities and origins of the spirits at Shadows on the Teche remain subjects of ongoing investigation among paranormal enthusiasts and historical researchers attempting to connect phenomena to documented historical residents. The apparition known as Mary Moore may represent a historical figure connected to the plantation during the nineteenth century, though definitive confirmation remains elusive. The presence of multiple entities, including disembodied voices and sounds of children, suggests the property has absorbed tragic or emotionally significant events throughout its long occupation spanning nearly two centuries. Contemporary museum staff and paranormal investigation groups have documented experiences through audio recordings, thermal imaging, and eyewitness accounts, contributing to the mansion's reputation as one of Louisiana's most actively haunted historic sites.