The Corporation Trust Center at 1209 North Orange Street is one of the more famous addresses in American business — a drab two-storey office building that serves as the registered legal address for several hundred thousand corporations. It is the most visible result of Delaware's role as the de facto US corporate registry: over half of US public companies, and 67% of the Fortune 500, are legally incorporated here.
You cannot enter — it is a private office — but the building itself is a quick walk from Rodney Square and a quirky stop on a downtown wander. The contrast between the unremarkable facade and the scale of the legal activity inside is the point.