I’m in Venice, and very soon I’m going to be sharing another secret garden with you. But in the meantime, on a cold day here today - not as cold as the UK I admit, but there’s definitely a thermal-vest situation going on - I was lucky enough to experience an occasional winter view here which, when glimpsed for the first time, sparks one of those Woah-I-DID-NOT-KNOW-THAT-WAS-EVEN-A-THING moments: