Greystone (architecture)

Greystones are a style of residential building most commonly found in Chicago, Illinois, typically grey in colour and most often built with Bedford limestone quarried from south central Indiana, with roughly 30,000 examples in Chicago usually built as semi-detached or fully detached townhouses. The term greystone is also used for buildings in Montreal, Quebec, known in French as pierre grise, referring to the grey limestone facades of many residential and institutional buildings constructed there between 1730 and 1920. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/