Montrose Mansion and Chapel

Montrose Mansion and Chapel is a two-story stone residence with a mansard roof and rounded dormers set within a property in Baltimore County. A separate rectangular stone chapel with a bell tower sits on the same grounds, roughly a quarter-mile away from the main house.

William Patterson built the mansion in 1826 and gave it to his grandson Jerome Napoleon Bonaparte as a wedding gift, while the chapel was added in 1855. This connection links the property to a notable family in early American history.

The property combines Greek Revival, Second Empire, and Federal architectural elements, reflecting the changing styles of early nineteenth-century American residential design.

The property sits within a military reservation and may require special permission to visit. It is wise to check ahead about access and visiting times.

The mansion displays a blend of Greek Revival, Second Empire, and Federal style elements that show how architectural preferences evolved in the early republic. This stylistic diversity makes it a noteworthy example of the transition between different design periods.

Location: Baltimore County

Inception: 1826

GPS coordinates: 39.49780,-76.85250

Latest update: December 12, 2025 09:02