Part of the building that was once home to the bookseller and statesman WH Smith, who was part of the family behind the eponymous high street retailer, is up for grabs for £4.25million.
The period building in London's affluent Hyde Park Street has a stylish white stucco exterior.
On that exterior is a blue plaque confirming that it is the former home of William Henry Smith.
William joined his father's newsagent and book business in 1846, at which time the company became W H Smith & Son.
The section of the building that is for sale is a luxury penthouse that spreads across the fourth and fifth floors.
There is direct lift access to the leasehold penthouse, which has three bedrooms and two bathrooms.
The penthouse has almost 2,000 square feet of space and boasts some 2.95 metre high ceilings, with sash windows.
Daniel Copley, of Zoopla, said: 'This beautiful penthouse would make the perfect home for a buyer searching for a bright and airy space that doesn't compromise on luxurious touches.
'Despite its modern interior, which includes direct lift access and a sleek kitchen - the property also has an interesting history and was once the home of WH Smith - of the well-known high street store.'
William Henry Smith was born on June 25 in 1825. He was an English bookseller and newsagent who worked for the family firm WH Smith.
He was responsible for expanding the company by introducing the the sale of books and newspapers at railway stations.
He was elected an MP in 1868 and rose to the position of First Lord of the Admiralty less than ten years later.
Due to his lack of naval experience, he was perceived as a model for the character Sir Joseph Porter in HMS Pinafore.
In the mid-1880s, he was twice Secretary of State for War, and later First Lord of the Treasury and Leader of the House of Commons, among other posts.
He was the son of William Henry Smith who was born in 1792, who in turn was the son of Henry Walton Smith, who established a news vendor in Little Grosvenor Street in London - the precursor of WHSmith in 1792.
The flat has a large kitchen with a central island and a separate space for a table and chairs.
And there is a large living room with a feature fireplace and a dining area.
The sale of the property is being handled by Chestertons estate agents, which said: 'This fourth floor duplex penthouse is a true gem. With double aspect views and 2.95m ceilings, it offers an abundance of natural light and a spacious ambiance.'
The property has good access to public transport, with Lancaster Gate and Paddington Underground stations less than half a mile away.
There are also schools within a similar distance, including Connaught House School and Halcyon London International School.
The flat is in Hyde Park Street, which is in the London's Westminster.
The average price of a property sold in London's Westminster in the past 12 months is £1,647,450.
It compares to the average of £356,318 for the country as a whole, according to property website Zoopla.