GRC is located in the Willet Green MillerCentre on the north side of the LU campus, which is also the home of the Ontario Geological Survey, Ontario Geoscience Laboratories, Ontario Mines Library, Mine Recorder, and the Ministry of Northern Development and Mines.
The Willet Green Miller Centre is a natural geological museum. The exterior of the building is stainless steel, made in part from nickel mined in Sudbury, and Vermilion Pink granite from the Vermilion Bay area.
The floor and walls of the public areas of the interior are finished in Butler Grey granite from Ignace and Dana Black anorthosite from north of Sturgeon Falls.
The Gem Float boulder from near Cobalt is on display in the main lobby, and there is a fine collection of gold and silver samples on display in the Library. There are outcrops with shatter cones (related to the meteorite impact event that formed the Sudbury Basin) adjacent to the staff parking lot. The sidewalks of the building are made of Manitoulin Island dolostone containing fossils of the coral Paleofavosites aster and have well preserved glacial striae. The reflecting pool along the front of the building is lined with rounded stream boulders and is bordered by blocks of pink and grey banded gneiss from south of Sudbury that contain abundant small red garnet crystals.