I thought the one in Boston was big but they reckon this one is the biggest in North America*.
It's another Japanese Pagoda Tree (Sophora japonica).
This one's on Martha's Vineyard and was planted in 1837.
No, it's not dead - it just hasn't put on it's new leaves yet.
Click the photo for a better look at it.
* See the person in black at the base of the tree? It gives you an indication how big this tree is.