The majestic estate sits along Kempenfelt Bay's millionaire row on Lake Simcoe.
Known as Woodlands, the solid brick Victorian mansion was built circa 1870 complete with its own tennis courts, golf course and marina.
It is one of many sprawling, magnificent summer homes built by the wealthy to enjoy a pristine escape outside of the city.
Woodlands is now back on the market with a list price of $16,000,000.
Unlike other original summer estates, Woodlands has not been levelled.
"In some ways it's unique because it's still standing," said Ellen Millar, assistant archivist at the Simcoe County Archives.
"Certainly the fact it's still standing and intact makes it a gem historically."
The home sits on 14 acres and has 14 bedrooms, 13 bathrooms, 10 fireplaces.
But Woodlands stands out for more than its architecture and high price tag.
One of its owners was famous for surviving the sinking of the Titanic in 1912.
Lt.-Col. Arthur Peuchen of Toronto bought the property in 1907.
The mansion was originally immortalized by photographer John Stephens who opened a studio in Barrie and was taking pictures around 1875 to 1900.
Two photographs of Woodlands are among 148 in the Livingstone Collection which can be viewed in it's fascinating glory at the Simcoe County Archives.
Any image of the estate is a treat for the curious because Woodlands is set back from the road and only clearly visible from the water.
It's a unique piece of Barrie area history that the general public can't see inside, unless invited.
"It's sort of a secret gem because with it being a private estate, the general public wouldn't have been going in to see the buildings.
It's one of those, you'd love to see the inside of it but because its private you can't," said Millar.
For those who watch the real estate market, the original construction cost of Woodlands will make you smile - or maybe cry: $30,000, with 100 acres of land included.