
The facade of John C. Allen, Jr.’s twenty-first-century home, in locally mined limestone, was built to look as if it were constructed in the early 1800s.
Photo: Patricia Lyons

Two wings added to the limestone facade were made to look as if they were built over many decades.
Photo: Patricia Lyons

Vandalia sits along a scenic stretch of the Potomac River that faces Antietam National Battlefield.
Photo: Patricia Lyons

The airy kitchen opens to a sitting room and hearth with windows that overlook the Potomac.
Photo: Patricia Lyons