Cool Hollow House

Cool Hollow House is a brick residence built in 1823 with five bays arranged around a central entrance. The structure sits on roughly seven acres that contain preserved remains of an eighteenth-century mill complex.

The house was built in 1823 during a period of stylistic change in American architecture. During the Civil War in 1863, it served as a campsite for Union troops retreating from the Battle of Gettysburg.

The house blends Federal and Greek Revival styles, showing how American architecture evolved during the early 1800s. Visitors can see these design choices in the building's proportions and details as they walk around it.

The property sits along Old National Pike and is surrounded by grounds that allow visitors to explore the entire site on foot. Wearing sturdy shoes is helpful since the ruins and landscape are best experienced by walking around the property.

An unexplored cave system lies beneath the property, adding a layer of mystery to a visit. Across Antietam Creek stands the remains of a stone forge, indicating that this land once supported industrial activity beyond just farming.

Location: Washington County

Inception: 1823

Architectural style: Federal architecture, Greek Revival architecture

Address: 9302 Old National Pike

GPS coordinates: 39.56897,-77.69025

Latest update: December 14, 2025 18:46