The garden's Statue Walk is made up of 19 statues in the style of Italian sculptor Antonio Bonazza. The statues were acquired by then-owner Walter Murray Guthrie from a derelict garden near Milan and shipped to Scotland for next to nothing as ballast in a cargo ship.
John Campbell of Possil sold the castle and the estate to Arburthnot Charles Guthrie, a wealthy London businessman, in 1865. It served as his "getaway" and must have been ideal for that purpose, as the castle has over 60 rooms and is surrounded by an estate of over 12 acres (0.049 km2). Following the sale of Guthrie Castle out of the Guthrie family, Torosay was generally acknowledged as the seat for Clan Guthrie. Torosay was sold in 2012 to the McLean Fund and closed for renovations, and opened in December of 2013 with a private family. Christopher Guthrie-James, former Laird of the Estate said "it was with a sense of relief, rather than regret, that we sold the family home at Torosay." Kenneth Donald McLean sixth Laird has spent more than £1 million renovating the castle and gardens. The castle and its gardens were closed to the public in the summer.
The Campbell of Possil coat of arms on the south elevation of Torosay Castle incorporates three bugles (horns). These were taken from the armorial bearings of John Campbell's third wife, Elizabeth Williamson, daughter of Donald Horne, but were never matriculated by the Lord Lyon of Scotland.
The novelist Angela du Maurier, older sister of Dame Daphne du Maurier, is said to have spent some time residing at Torosay with her close companion Olive Guthrie (Great Grandmother of the present owner). Angela dedicated her book Weep No More (1940) to "Olive Guthrie of Torosay." Other visitors during the 1930s included Winston Churchill (Olive Guthrie was his aunt by marriage) and King George of Greece.
In July 2008 the then oldest bottle of Veuve Clicquotchampagne was discovered inside a sideboard in Torosay Castle. The 1893 bottle was in mint condition. It is believed to have been locked inside the dark sideboard since at least 1897. The champagne is now on display at the Veuve Clicquot visitor centre in Reims, France, and regarded as "priceless".