The Harmony Museum displays furniture and artifacts from Harmonist history and, as an artifact itself, embodies that history. Built as a warehouse and granary, much of the building remains as the Harmonists left it, including the recessed Virgin Sophia (symbol of chaste and holy wisdom) doorway attributed to Frederick Reichert Rapp. The original windows had stone surrounds, which are gone, but the building retains its vaulted wine cellar. A similar cellar can be found in the recently restored Harmonist store building of 1807 (534 Main Street) diagonally across the town square from the museum, which also contains the only remaining example of a Harmonistera wooden casement window, which has now been duplicated on the facade.