Stanton Hall in Natchez, Mississippi

Stanton Hall, also known as Belfast, is an Antebellum Classical Revival mansion at 401 High Street in Natchez, Mississippi. Built in the 1850s, it is one of the most opulent antebellum mansions to survive in the southeastern United States. It is now operated as a historic house museum by the Pilgrimage Garden Club. The house was declared a National Historic Landmark in 1974 and a Mississippi Landmark in 1995.

 

Stanton Hall occupies an entire 2-acre (0.81 ha) city block north of downtown Natchez, bounded by High, Commerce, Monroe, and Pearl Streets. The property is ringed by wrought iron fencing with elaborate gate posts. The house is a two-story brick structure, plastered and painted white. Its front entrance features a two-story Greek temple portico, with four fluted Corinthian columns supporting an entablature and gabled pediment. Spaces between the columns have decorative iron railings, repeated in a second-floor balcony railing set under the portico. The main roof is hipped, and truncated with a large cupola at the center. The interior is elaborately decorated, using materials such as imported Italian marble, and chandeliers made of glass and bronze.

 
I believe there are tours of the house available. You can read more about the history on the following websites:
 
Wikipedia
StantonHall.com