The Salzstadel (salt barn), also known as the „Gretstadel” (depot), was moved out of the town at around 1560, and rebuilt on a larger scale in front of the Sonthofener Tor. It served as a place for merchants to store their goods, as wares and salt were cleared through customs by the town. Salt in particular was stored here in the past. Many local and foreign craftsmen displayed their merchandise in the Salzstadel.
In 1872, the building was bought at auction by the town. Until the end of the 19th century, the Salzstadel was considered a half-timbered house.
The house was very large for the standards of that time. It had three floors and a storage of 1,100 square metres. To transport goods upstairs, there was a lift machine on the top floor.
The impressive half-timbered building was demolished in 1894 and replaced by residential buildings.