In the Barbican is a most curious relic, a stump of a tree which is it claimed, may have regularly shaded the composer Felix Mendelssohn during his frequent visits to where the tree stood.
Wrapping around a tall tower in the Barbican is a large glass conservatory, which often surprises people to learn is, after Kew Gardens, the second largest in London.
This summer, there will be a season of Manga films shown on the Barbican's big screens.
At a time when humans are still struggling to define intelligence in machines, an exhibition about the same could be heading into controversial territory.
There's a video screen that shows changing shapes in a sort of 1980s home computer version of the 2001 Space Odyssey scene.
A huge 24 metre length of slowly moving photographic film is currently turning in an endless loop in the heart of the Barbican.
The City of London has announced a pilot scheme that would see a road next to Barbican flats restricted to ultra-low emission vehicles to see what impact it has on improving air quality.
A new film by the guy behind the award winning documentary about the last days of the Robin Hood Gardens estate in east London, has turned his gaze upon the Barbican itself and how sunset transforms the buildings.
There's a small exhibition at the moment in The Barbican showing off photos taken inside the famous music studios at Abbey Road.
The curve, that wonderful massive space for art at the Barbican sometimes has queues around the block so good is the art on display. And sometimes, you're left scratching your head in bewilderment.
Next weekend there's free interactive art thing happening, and its set among the Barbican Highwalks, that optimistic, or infuriatingly complex, set of elevated pedestrian passages in the City of London.
A road tunnel running underneath the Barbican estate is to be closed to traffic for a weekend next month, and turned into a light and sound installation.
If you're wandering around the back of the Barbican, you might spy a lot of steel tubes with a seemingly random selection of plants in them.
The Barbican has almost as many food establishments as it has concert halls and galleries, so which to choose from.
A vast display of science fiction memorabilia is filling an inky black space within the brutalist heart of the Barbican at the moment.