The Nisus Civic Center was a large public building located on the Nisus science colony, and was located near the colony's dam and power plant. The civic center was home to the Nisus Council chambers and also contained a large refectory where the council members could meet.
During the plague epidemic on Nisus in late 2267 the Civic Center, along with all public buildings, were closed to the general public. However, emergency council meetings were still being held. (TOS novel: The IDIC Epidemic).