The Joseph Jefferson Mansion, built in 1870 and listed on the National Register of Historic Places, is a charming twenty-two room Southern mansion, with a fourth-story cupola. Jefferson sited it among 350-year-old-oak trees high atop the salt dome, at an elevation of 75 feet above sea level - almost unheard of in the coastal areas of south Louisiana.

The home is an architectural treasure reflecting Moorish, Steamboat Gothic, French and Southern Plantation styles, harking to the Victorian age of elegance and grandeur. It stands as the centerpiece of the Gardens, and its richly appointed with heirlooms, period paintings, rare Louisiana pieces and fine examples of American and French Empire furniture. Tours of the gardens and mansion begin on the hour from 9 a.m to 4 p.m seven days a week. Admission is $10.00 per adult, $8.00 per senior, and $6.00 per child 8 and older.