In public spaces and large corporate / institutional buildings, artists are commissioned to create large-sized art-works, usually sculptures.
Often, these large works of art or sculptures are not monolithic or homogenous structures and are made as individual pieces in the studio and carried to be assembled on site. In case of heavier materials, the execution may happen on the site itself. Whether made of glass, metal or mixed-media, a team of people is needed to execute the installation (partial or whole) on the site under the supervision of the artist. There are specialized contractors handling this job for the client / artist.