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The Castello Plan is an early city map of Lower Manhattan from 1660, created by Jacques Cortelyou, surveyor of then named-New Amsterdam (later renamed by Province of New York settlement as New York City).
Around 1667, cartographer Joan Blaeu bound the plan, together with other hand-crafted New Amsterdam depictions, to an atlas, which he sold to Cosimo III de' Medici, Grand Duke of Tuscany. This transaction most likely happened in Amsterdam, the Netherlands, as it has yet to be proven that Blaeu ever set foot in New Netherland.
- Iconography of Manhattan Island from Columbia University Libraries
- Overlay of the Castello Plan on current Manhattan
- List of property owners
- Map scanned from the book The Legend of New Amsterdam
- Interactive version of the Castello Plan
- Google Earth File of the Castello Plan
- Zoomable version of the Castello Plan
- New Amsterdam History Center