A five-storey beige office block on South Church Street that became, in the 2000s, the global symbol of offshore banking. The building is the registered address of more than 40,000 corporations — most of them shell companies set up by international clients of the Maples Group law firm that owns it — and is regularly cited in books and documentaries on tax avoidance.
You cannot go inside. The interesting part is the address itself: stand on the pavement, take a photo of the small plaque by the door reading "Maples and Calder", and consider that the world's biggest concentration of corporations by area is a building you could throw a stone across.