The original building was erected in 1334 as a warehouse, meeting and celebration place for merchants. It was the biggest public building of Riga. From mid 15th century it was also used by Brotherhood of Blackheads, a guild for  unmarried merchants, shipowners and foreigners in Riga.
The original structure served as a central location in 1334, hosting gatherings and celebrations for traders. It stood out as Riga's largest public building. Later, from the mid-15th century, it also played host to the Brotherhood of Blackheads, an organization comprising single merchants, shipowners, and foreigners.