The Duchamp is located across from St martin de Tours square. It was built in the 1830's. It served as a department store on the lower level, and a dance hall and theatre on the upper floor.

The building is listed on the National Register of Historic places

For more information see
http://classes.slis.lsu.edu/wu/7008/fa11/uslaughter/Project/St.%20Martinville/DuchampOperaHouse.html