To the uninitiated, it looks just like just any other Edinburgh tenement door, save for the fact it's padlocked with a curious brass plaque that alludes to something far more unusual.
Until now, very few capital locals were aware of the existence of The Morningside Club, a secret society that's apparently been on the go for decades.
The confidential club occupies the ground floor property at 3 Morningside Park. Frosted windows and an adjoining extension, the frontage of which is masked with ivy, keep everything hush-hush.
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The majority of locals in Morningside, even those who had lived there their whole lives - had absolutely no idea it was there and there was barely a mention of it on the internet.
And yet the club was formed more than 70 years ago and currently has 90 members, all of whom enjoy exclusive access to a private lounge, games rooms, and a beer cellar.
As you can imagine, the club's membership policy has forever been strict. Since its founding in 1950, it's been an invite-only affair and involving a seven-year wait with multiple approvals - but all that is set to change as the club looks to boost dwindling numbers.
Speaking to the BBC, Graeme Ritchie, who is the current club president at the Morningside Club and has been a member there for 55 years, said: "Not many people know about the club, it's a bit of a hidden gem within Morningside.
"There is not the demand for it that there used to be, so we now have 90 members. In its heyday it was great as everybody knew everyone, you could turn up on your own and you always had all your friends there.
"It was smoky and very busy and there was a real buzz about the place. We even had a steward who lived in the back rooms with his wife to look after the place. But that has all dwindled now."
Mr Ritchie added: ""I'm waiving that rule now and going to start letting new members apply even if they don't know anyone at the club."
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