Geograph - photograph every grid square

Dinky Doors is a street art project by a pair – it would seem – of anonymous artists.

It comprises a series of miniature doors located around Cambridge. Perhaps 'portal' would be a better word, as they appear to access a universe that is not quite our own.

The different doors are listed here in the order that I visited them in September 2019; the descriptions are taken from Dinky Doors own website. Link

Some of the works have moveable parts for the public to manipulate, and some of the inscriptions repay close inspection.

RIDE AND PARK - It's without doubt, the best way to visit Wandlebury and Milton Country Parks for your Wild Thyme and Embers kids bushcraft day - the best way to learn to survive the coming apocalypse.

LOVE FROM ABOVE - Sure, Angela and Mr. [D] Mon are somewhat diametrically opposite, but the fact that they're in love, proves that anyone can set aside their differences.

WONDER EMPORIUM - A Dinky shop where the mysterious objects that fall from our world can begin a new and exciting second life!

TELEPORT-o-MATIC - Or, "ToM" for short, is our new-and-improved teleportation service. You can find it nestled between the 3rd and 4th telephone boxes.
Bring some 3p coins if you want to go for an 'exciting' journey.

10 (and a quarter) DOWNING STREET - It's a world famous door, on a world famous street. Only... um... in miniature and maybe it's not the really famous street?
Do you dare see the inhabitant within?

REALITY CHECKPOINT - This is no ordinary lamp post. No.
It's Reality Checkpoint. Where reality itself is checked for how Splendid or Feisty it is. Crikey.
It's fully-interactive, so do adjust it if you're passing by.

THE EMAILERATOR - You know how it is, you want to post a parcel, but you're worried about safe delivery.
Our Emailerator service takes the postal out of posting... and emails it instead.
We're not sure how it works, but if you open the door, maybe you can discover its inner workings for yourself...?

THE DFO (Dinky Flying Object) - It's one dinky step for the Supreme Leader, one non-dinky leap for Dinkykind.
OMG - Aliens have crash-landed in Cambridge!!!!11!!!111!1!!1!!
It's out of this world.

I visited 3 more Dinky Doors locations in February 2021, but you will need to visit their website (see above) to find their names and descriptions.

A rocket-powered space rocket has appeared on Green Street, while further afield there is a crime scene on Mill Street where a previous manifestation disappeared just four days after its appearance, and on Sedgwick Street you will find the Octospa, complete with bollard lighthouse. During the visit, a revisit to Downing Street shows that the inhabitant within is alive and possibly kicking . . .

Reality Checkpoint is the name given to a large lamp-post in the middle of Parker's Piece, located at the intersection of the park's diagonal paths. The name comes from an unofficial inscription which has been painted on the lamp-post since the early 1970s. The lamp-post is also believed to be the oldest electrical lamp-post in Cambridge.
There are four main theories as to the meaning of the name.
1.It may mark the boundary between the central university area of Cambridge (referred to as the 'reality bubble') and the 'real world' of non-academic locals living beyond. One is warned to check one's notions of reality before passing. For students at Cambridge, who walk out to Mill Road across Parker's piece for an evening in the 'real world', usually including a visit to one of Mill Road's selection of pubs, the lamp-post marks the end of the 'reality holiday' as they walk back to central Cambridge - back into 'the bubble'.
2.The name arose because the lamp-post forms a useful landmark for people crossing the park at night—perhaps inebriated or in the fog—since it is the only light for hundreds of yards.
3.When drunk, students and the general public are reminded to check they are able to walk like a sober person before passing the police station just a few hundred metres away.
4.The post being situated in the middle of two walking paths that intersect, anyone walking whilst not tuned in to "reality" will probably collide with the lamp-post, hence "reality checkpoint".