63°49′33″N 20°15′12″E / 63.82583°N 20.25333°E
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The von Ahn Warehouse is a warehouse at the Ume River, at the bend of Västra Standgatan in the town of Umeå. It is a heritage building since 1980.
The original upper part of the building was built by lieutenant colonel Ludvig August von Hedenberg in 1887 to serve as a barn. On June 25, 1888, almost the whole wooden town of Umeå burnt down in a devastating fire. However, the barn withstood the fire and it was purchased later in 1888 by the local merchant Johan Viktor von Ahn. He extended the building southwards towards the river, based on drafts by the architect Carl Fridolf Engelbert Sandgren.
Due to the steep plot, the building has three storeys towards the river, but only one storey towards Storgatan, where the main entrance is situated. The southern gable wall is close to Västra Strandgatan, where the street goes along the river. The building is a red-painted timber construction in the same tradition as other houses built in the County of Västerbotten before the Great Town Fire of 1888.
The von Ahn Warehouse is owned by the municipal energy company, which is also the owner of the building nicknamed "Smörasken" in the same block.