| Great Valley Mill | |
| Location: | 72 North Valley Road, Tredyffrin Township, Pennsylvania |
| Coordinates: | 40.0661°N -75.4903°W |
| Built: | 1859 |
| Added: | September 1, 1983 |
| Refnum: | 83002224 |
| Designated Other1 Name: | Pennsylvania state historical marker |
| Designated Other1 Abbr: | PHMC |
| Designated Other1 Date: | August 19, 1947[1] |
| Designated Other1 Link: | List of Pennsylvania state historical markers |
| Designated Other1 Color: | navy |
| Designated Other1 Textcolor: |
|
The Great Valley Mill, also known as the Old Grist Mill in the Great Valley, is an historic grist mill which is located in Tredyffrin Township, Chester County, Pennsylvania.
It was listed on the National Register of Historic Places in 1983.
Built in 1859, it is a four-story, rectangular, banked, stuccoed, fieldstone structure with a gable roof. It measures by .[2]
It was listed on the National Register of Historic Places in 1983.
The current building stands on the site of earlier mills, the first dating from 1710. The mill ground flour until the late 20th century, when the flour business was moved to Berks County.[3]