The company has expanded into a restaurant chain, and the Oyster Bar continues to be a tourist attraction at Clachan, Cairndow.
Dating back to the 1300s, the Ardkinglas estate extends over more than 4,900 hectares (12,000 acres) of rolling hills and landscaped parkland.
The present Ardkinglas House was built by architect Sir Robert Lorimer, completed in eighteen months in the Fall of 1907, and is considered to be his masterpiece.
The house remains unaltered and is a popular location for television period dramas and film productions, as well as weddings.
The Woodland Gardens, dating from the 18th century, are open all the year round with views of the exterior of the Ardkinglas estate, with its scenic backdrop on Loch Fyne.