The George Markell Farmstead, also known as Arcadian Dairy Farm and the Thomas Property, is a historic home and farm complex located at Frederick, Frederick County, Maryland, United States.

The main house has combined Greek Revival and Italianate stylistic influences.

The once large Markell dairy farm, with its lane to the Ballenger Creek ford of the Monocacy River, served as the primary approach route to the battlefield by Confederate troops during the July 9, 1864 Battle of Monocacy during the American Civil War.

[2] The George Markell Farmstead was listed on the National Register of Historic Places in 2002.

This article about a Registered Historic Place in Frederick County, Maryland is a stub.