The Barbican Centre is an essential escape from the hustle and bustle of central London. From the outside, it is a fortification of concrete and glass but, be brave, head inside and you will find yourself in an oasis of calm that will require many more visits to appreciate what it offers. The Conservatory is always going to be a delight and the open public spaces with the beds, planters and… those views – all tended by folk who both live and work there – it is a jewel – this is my postcard from the Barbican Centre.