The Cornwell Inn, also known as Cornwell’s or The Inn at Cornwell, is a historic stagecoach inn located near Blackstock in Chester County, South Carolina. Situated at the junction of U.S. Route 321 and South Carolina Highway 205, this inn stands as one of the few remaining early 19th-century stagecoach stops in the state.​

Constructed around 1841, the original structure is a 1½-story, five-bay, heavy-timber frame building clad in weatherboard. It showcases a blend of Federal and Greek Revival architectural styles, featuring:​

• A double-pitched gable roof
• Two exterior end chimneys with free-standing chimney stacks
• Ten-foot-deep, full-length porches on two sides​

Shortly after its initial construction, a 1½-story, five-bay addition with a full basement was added, expanding the inn’s capacity and functionality. ​

The Cornwell Inn played a pivotal role in the 19th-century transportation network, serving travelers along the Charlotte to Charleston Road, a major state route during that era. Its strategic location made it a vital rest stop for stagecoaches and their passengers. ​

In the late 1840s and early 1850s, the area witnessed significant developments with the grading and eventual completion of the railroad through Blackstock. The arrival of the first train in July 1851 was a momentous event, drawing large crowds from the surrounding regions.

Recognizing its architectural and historical importance, the Cornwell Inn was added to the National Register of Historic Places on February 18, 1994. The listing encompasses approximately 5 acres, preserving the inn’s legacy for future generations. ​