[Model of a proposal for the preservation and reconstruction of an historic city block in Downtown Manhattan.]

[Model of a proposal for the preservation and reconstruction of an historic city block in Downtown Manhattan.]

[Model of a proposal for the preservation and reconstruction of an historic city block in Downtown Manhattan.]

[Model of a proposal for the preservation and reconstruction of an historic city block in Downtown Manhattan.]

[Model of a proposal for the preservation and reconstruction of an historic city block in Downtown Manhattan.]

[Model of a proposal for the preservation and reconstruction of an historic city block in Downtown Manhattan.]

[Model of a proposal for the preservation and reconstruction of an historic city block in Downtown Manhattan.]

[Model of a proposal for the preservation and reconstruction of an historic city block in Downtown Manhattan.]

[Model of a proposal for the preservation and reconstruction of an historic city block in Downtown Manhattan.]

[Model of the first electric station in the world for the production and distribution of power.]

[Model of the first electric station in the world for the production and distribution of power.]

[Model of the first electric station in the world for the production and distribution of power.]

Downtown District of Manhattan

[Model of the Queensboro bridge.]

[Model of the tower of the Queensboro Bridge. ]

New Amsterdam in 1660

[Downtown Manhattan from a rooftop, including St. Paul's Steeple]

New Amsterdam in 1660 (Detail)

30 Broad Street. View of Continental Bank Building and Lower Manhattan

Stock Exchange [Woman giving a tour of the stock exchange, showing a model trading post.]