English explorer Henry Hudson set foot on an island called Mannahatta 400 years ago. The Manhatta Project has recreated the island as it appeared in 1609, with forests, wetlands, and a vast array of wildlife. See views of Manhattan side-by-side with a computer recreation of what it looked like before it became a city. Link -via mental_floss
(Image credit: Markley Boyer, Mannahatta Project/Wildlife Conservation Society)