Montrose Mansion and Chapel

Montrose Mansion and Chapel, originally known as Montrose Mansion, is a historic home located on the campus of Camp Fretterd Military Reservation of the Maryland Army National Guard in Reisterstown, Baltimore County, Maryland. It is a two-story neoclassical stone house constructed originally about 1826 by William Patterson who gave it to his grandson, Jerome Napoleon Bonaparte as a wedding present. By the middle of the 19th century, a large two-story wing was added, then a mansard roof with round-top dormers, a cupola, and a bracketed cornice with pendants was added about 1880. The chapel was completed in 1855 and is a rectangular structure of stone with Greek Revival decorative detailing. It features a three-story bell and entrance tower.

The mansion and tower are separated by about a quarter of a mile.

It was listed on the National Register of Historic Places in 1990.