official England

1. Does the green highlighted sentence mean "the square feels like their second home for London's visitors" or "the square is a certain tourist destination for London's visitors"?

2. Does "official England" mean "governmental offices concentration" or "the history of England"?

Context:

Trafalgar Square is nothing if not overdetermined urban space. If London has a centre, and that is debatable, this is certainly a candidate with its conglomeration of key institutions, representing, inter alia, culture (The National Gallery), the colonialist Commonwealth (the high commissions of Canada and South Africa), the church (St. Martins-in-the-Fields), to say nothing of Whitehall’s politics a few paces down one road and royal Buckingham Palace a few minutes down another. With its various statues and plaques and bronze panel depictions, commemorating imperialist power and victory in war, it is small wonder that the square has become in some sense the London visitor’s ‘home from home’. Here is where official England is staged in one of its most concentrated forms.