High Quality Content by WIKIPEDIA articles! Oak Hill is a mansion and plantation near Leesburg, Virginia that was for 22 years a home of James Monroe, the fifth U.S. President. The main mansion of the property was constructed in 1822 for Monroe, who subsequently split time between this estate and another home at the Monroe Hill on the grounds of the University of Virginia after his term as President. The estate is a designated U.S. National Historic Landmark. Oak Hill was Monroe's only residence for three years, from 1827 to 1830, and it was one of his residences during 22 years. The mansion was built in 1820, during Monroe's presidency. Before that, Monroe's residence at the estate was the clapboard building known in recent years as the Monroe Cottage.