Muller's Department Store was a major department store, and it is the name of a three-story brick building now located at 625 Ryan Street in downtown Lake Charles, Louisiana. The building was built in 1913 and opened as a store. It was expanded to the rear in 1949, adding about a third.

The building was listed on the National Register of Historic Places in 2007. Its boundaries were increased in the same year to include the nearby Berdon-Campbell Store at 619 Ryan Street, which was acquired by Muller's Department Store in February 1943. With .

At the time of its NRHP application, plans were underway for it to be renovated into apartments. The developer sought tax credits that would be tied to NRHP listing. With . with 17 photos and a map

Today it serves as an apartment complex in the heart of downtown.

See also

National Register of Historic Places listings in Calcasieu Parish, Louisiana Lake Charles, Louisiana

References