Harry Gordon Selfridge was a figure of relative obscurity to many until ITV's Mr Selfridge appeared on our screens in 2013.
Selfridges, the shopping behemoth at which the series is based, opened its doors on 15 March 1909 on what was then the unfashionable end of Oxford Street.
1. Size matters
Selfridge's (it had an apostrophe when it opened) was the last of London's best-known department stores to be built — and is the only one that was purpose built. Others were adapted and extended from previously existing buildings. It's currently the second largest retail space in the UK, after Harrods.
2. Taking flight
Shortly after the store opened, French aviator Louis Blériot became the first person to fly over the English Channel. In July 1909, his plane was put on display in Selfridges for four days, attracting over 150,000 people to visit the store.
3. The rooftop
The Selfridges' summer rooftop is now an annual fixture, but did you know that it was closed for over 70 years?
In the store's early days, many forms of entertainment took place in the roof gardens; in 1913 dancers Florence Walton and Maurice Mouvet performed for 2,000 people at a charity ball on the roof terrace. However, in the second world war, the store was bombed, with most of the damage done to the rooftop.
The rooftop remained closed until 2009, when Michelin-starred French chef Pierre Koffmann came out of retirement to run a pop-up restaurant overlooking Oxford Street. Since then it has hosted many pop-ups, including restaurants, bars, crazy golf and a boating lake.
4. The Selfridge's Seismograph
Never one to miss a bit of publicity, Harry Gordon Selfridge had a seismograph installed in the building for several years in the thirties. It picked up readings from several earthquakes around the world. Today, the seismograph is at the British Museum.
5. Queen Of Time Clock
You may have walked past the Oxford Street entrance hundreds of times, but have you ever looked up and seen the Queen of Time clock? Unveiled in 1931 to mark the store's 21st birthday, the 11ft tall sculpture was designed by Gilbert Bayes, and is created from bronze.
6. War effort
The Selfridges building reaches 6o metres below ground level, so it's no surprise that the basement levels were put to use during the second world war. The US Army took up residence down here, as the building offered a secure telex line, was safe from bombing, and was close to the US Embassy in Grosvenor Square. Churchill and Eisenhower are both known to have visited.
Never sure whether to include an apostrophe in Selfridges? Don't. The removal of the apostrophe in the store's name was a deliberate choice following a certain series of events. Cryptic, huh?
8. Phone number
Somehow — and nobody's quite sure of the details — Harry Gordon Selfridge managed to convince the General Post Office to give the store the telephone number '1'. So for several years, you'd only have to dial '1' to be connected to a Selfridges operator. This is not the case today, so don't try.
9. Miss Selfridge
Ever wonder if high street fashion chain Miss Selfridge is linked to the Oxford Street giant? Turns out it is. Selfridges opened the first Miss Selfridge inside the main store in the 1960s in an attempt to attract a younger, more fashion-led clientele. It had its own entrance in Duke Street, a coffee bar and a Pierre Cardin department.
10. The store today
These days, Selfridges claims to be home to the largest shoe department in the world, with more than 4,000 pairs of shoes at any one time. The store also revolutionised the sale of make-up, perfume and beauty products; before Selfridges, these items were often sold at the back of stores, as they were considered taboo, but Selfridge himself made the decision to move them to the front of his store, and the rest is history (and you've got him to thank every time an over-enthusiastic salesperson showers you in various fragrances at any department store, ever).
11. Sell Fridges?
No, they don't.