A stone inn on the National Road dating to 1732, once headquarters to Confederate General D.H. Hill, now a Maryland DNR visitor center where the ghost of 19th-century proprietress Madeleine Dahlgren is repeatedly reported on the upper floor.
6132 Old National Pike, Boonsboro, MD 21713
Research updated June 2026
Age
All Ages
Cost
Free
Now a Maryland DNR / Maryland Park Service property; visitor center use; check Maryland DNR for current access details
Access
Wheelchair OK
Historic stone building; paved lot
Equipment
Photos OK
Est. 1732 · Maryland Inventory of Historic Properties WA-II-001 · Stagecoach stop on the National Road; hosted Daniel Webster, Henry Clay, and U.S. Presidents · Seized by John Brown's raiders in 1859 · Served as Confederate General D.H. Hill's headquarters, Battle of South Mountain (September 14, 1862) · Owned by Madeleine Vinton Dahlgren, author of 'South Mountain Magic' (1882) · Maryland's oldest continuously operating restaurant until 2023
The Old South Mountain Inn — recorded in Maryland's Inventory of Historic Properties as WA-II-001 — is one of Washington County's most historically layered structures. An inn was operating at this site as early as 1732, situated on what would become the National Road, the first federally funded highway in the United States. After the road was surfaced in the 1820s, the inn became a major stagecoach and wagon stand; its guest registers over the following decades included Daniel Webster, Henry Clay, and several U.S. Presidents.
The property's Civil War record is particularly well-documented. In October 1859, members of John Brown's raiding party seized the inn overnight as an outpost during the Harpers Ferry operation. Three years later, in September 1862, Confederate General D.H. Hill established his headquarters at the inn during the Battle of South Mountain — the opening engagement of the Maryland Campaign that culminated at Antietam. The building served as a field hospital during the battle, and owner Chad Dorsey, who operated it as a restaurant from the late 20th century through 2023, noted there was 'actual evidence' of its wartime hospital use.
In 1876 the property was purchased by Madeleine Vinton Dahlgren, widow of Union Admiral John A. Dahlgren, who converted it to a private residence. Dahlgren was a prolific author and in 1882 published 'South Mountain Magic: Tales of Old Maryland,' an early documentation of regional ghost lore and folk belief. The house became a tavern again in 1925 and a restaurant in 1971. Operating continuously, it earned the designation of Maryland's oldest-operating restaurant until it closed in 2023, when the Maryland Department of Natural Resources purchased the 3.15-acre property for management by the Maryland Park Service as a trailhead visitor center.
Sources
The ghost associated most strongly with the Old South Mountain Inn is Madeleine Vinton Dahlgren, who purchased the property in 1876 and is credited with publishing some of the earliest systematic documentation of South Mountain folklore. According to accounts collected by the restaurant's owner and reported in the Frederick News-Post, a patron once asked a server to identify the woman pacing at the top of the stairs in the front dining room. The server reported no living woman had been seen there; old photographs of Dahlgren show her consistently in a blue velvet dress, matching the description given by the patron.
A second legend, also reported in the Frederick News-Post feature, involves a fire incident: a door on the upper floor that normally remained stuck was found standing open one morning, allowing an employee to smell smoke in time to prevent a serious blaze. Staff attributed the unlocking to Dahlgren's protective presence.
A third reported entity is described as a little girl who has appeared in photographs taken on the main level. The inn's location near the Battle of South Mountain battlefield, its documented use as a hospital in 1862, and its two-century history of continuous occupation have all been cited by those who report the activity as context for an unusually layered haunted tradition.
The South Mountain region's broader folklore tradition — including the 'Snarly Yow' phantom dog and the wizard Michael Zittle, documented in Dahlgren's own 1882 book — adds regional depth to the inn's paranormal reputation and distinguishes it from sites with only anonymous Shadowlands-sourced lore.
Notable Entities
Media Appearances
Visit the historic stone inn that served as a stagecoach stop, Civil War headquarters, and Maryland's oldest-operating restaurant, now transitioning to a Maryland Park Service visitor center.
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