Exact federal listing answer
Is Wirth Building on the National Register?
Yes · NPS status: Listed
Yes. Reference 91000896 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Wirth Building as Listed in the National Register of Historic Places under reference 91000896.
Federal statusListed
National Register reference91000896
Listed dateJuly 25, 1991
Property categoryBuilding
Published address13 W. Superior St.
LocalityDuluth, St. Louis County, Minnesota
Significance levelLocal
Published acreage0.9
Exact answer boundaryThis confirms the named federal record only.
It does not prove that another address lies inside this property or district, establish local landmark status, decide preservation review, define a legal boundary, or describe ownership or current condition.
Why the wording is date-boundedThe answer reflects the NPS dataset published through May 22, 2026 and a live NPS GIS Listed-status cross-check made September 20, 2026. NPS notes that spatial points and polygons may need correction and are not legal documents.
Additional published fields
Areas of significance: ARCHITECTURE.
Same locality
Other released Duluth records.
Each linked page answers a separate named federal record.