To mark the 100th anniversary of the Grand Concourse, a four-mile-long boulevard that connects Manhattan to the parks of the Northern Bronx, Holten has created the Tree Museum: 100 specially-chosen trees between 138th Street and Mosholu Parkway, each of which has a story to tell if you dial the number at its base.

you also can view each of the tree locations on Google Maps.

The trees were chosen for their variety, Holten says, but also for "location, age, and connection to a particular person or story."

demonstrates an intriguing way to re-imagine the landscape: finding ways to make the hidden layers and connections of a street's story visible (or audible) might ultimately be as, if not more, important than installing a new swing set in the park.