Northrup King Building was built in 1917 and is actually 10 buildings in one complex. It was built for the Northrup King & Co. seed company, and they owned the building until the late 1980s. Then, after it was sold, it went through a transformation from seed company to an important hub of artist endeavors. It now holds over 190 artists and arts-related businesses as well as 30 other nonprofit organizations and entrepreneurs. The artists are passionate about their open studio tours, and many of them love getting to know the public. The building is open to the public every first Thursday of the month from 5 p.m. to 9 p.m., and the artists participate both in Art-A-Whirl and Art Attack. The latter is exclusive to this building, and it's three days with over 300 visual artists and plenty of music.