Carrsgrove is the name of a privately-owned mansion situated in Charlottesville, that Hans Holzer writes about in America's Haunted Houses.
He describes the "rambling... wooden structure" as being at least 150 years old in parts at the time of writing, which means that it must have been constructed circa 1830's.
The owners that Holzer interviewed described the phenomena as including a "sighing" ghost.
For a full account, we recommend you read America's Haunted Houses. It is believed that the property would still be a private residence and therefore NOT open to the public.
Highland, formerly Ash Lawn–Highland, was the estate of James Monroe, fifth President of the United States. Monroe and his family settled there in 1799 and lived at Highland for 24 years. However, debt forced Monroe to sell the plantation in 1825.
It did not acquire the name of "Ash Lawn" until after his death. The estate is now owned by the College of William & Mary. It is open to the public.
According to Holzer, the paranormal phenomena centre around a wooden rocking chair that rocks on its own. Is it the ghost of James Monroe returning to his beloved home and relaxing in a favourite chair?
Pictured is Highland courtesy of RebelAt.