Per the travel guide:
South of CULPEPER is GREENWOOD, an attractive, rambling, story-and-a-half frame house with low wings, painted white. It stands far back from the highway among tall trees.
---- Virginia - A Guide to the Old Dominion State, 1940.
The guide fails to explain the importance of this house. Nearby Virginia historical marker states that its owner in 1825, Judge John Williams Green, received the Marquis de Lafayette and former President James Monroe one evening.
The formerly white plantation house is a bright green (likely due to improvements in paint technology - thanks to American chemical technology). A private residence with no parking nearby. Take any visit photograph from the sidewalk (but no drive-by).