We all know the Queen famously never carries cash in her handbag, but clearly she likes to know where her money is, because she's installed a very royal ATM in Buckingham Palace.
Managed by Coutts, the go-to bank of the royal, rich and famous, the special machine can be accessed by friends and family who might have forgotten to bring cash along to their royal visit (because maybe they want to buy a souvenir or two, right?).
But despite having the facility in her castle - the only private home in the UK which has its own ATM - it's not known if Her Majesty has ever used the money machine, which has been there for several years.
This new ATM information comes from a four-part documentary called, Secrets of the Royal Palaces, which is about to be shown in the UK.
The first episode will focus on Buckingham Palace. The grand royal residence boasts 775 rooms, including 52 bedroom and 78 bathrooms.
It even has a doctor’s surgery, available for ‘emergency operations,’ according to Dickie Arbiter, the Queen’s former press officer.
There's also a whole world of leisure and shopping opportunities available to the 200 staff members who look after the royal family, the palace and its gardens.
These include a palace pool and even a private post office.
Unfortunately, Buckingham Palace had to shut down its on-site pub because the staff frequently ended up,"worse for wear" according to Arbiter.
Just recently, the Queen famously banned all plastic straws and plastic bags from her royal homes in a bid to set a good example in helping the environment.
The documentary will also cover some previously-unseen footage of other royal residences, Windsor Castle, Balmoral and Clarence House, home of Prince Charles and Camilla, and will feature commentary from royal observers and previous Palace staff members.