There are more than 20,000 trees in New York City's Central Park and an author and birdwatcher have mapped almost every one of them. Edward Barnard and Ken Chaya's map, "Central Park Entire," took them two and a half years to finish. Chaya walked thousands of miles in the park, mapping every tree and dirt trail.
The park is ever changing, but since 2011, Barnard and Chaya have continually updated their map, getting it as accurate as can be.
The duo sells poster sized maps and pocket sized ones at a reasonable price from their online store.
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