The Wendler Building is a historic commercial building at 400 D Street in Anchorage, Alaska. Built in 1915 by Tony and Florence Wendler, it is the oldest commercial building in the city. Originally located at 4th and I Streets, it was moved to its present location in 1985. It was used by the Wendlers as a store until 1920, after which Florence Wendler converted it to a boarding house. In 1948 she and her daughters opened Club 25, an exclusive private club for women. It was eventually opened to general membership, and was for many years a landmark of the city's social scene. The building was listed on the National Register of Historic Places in 1988.