Perhaps New York City doesn't have the illustrious fall foliage of New England, but that doesn't mean we have to head north to find some. Green-Wood Cemetery has many trees turning yellow, orange, and red right now, and it's still one of my favorite "parks" in the city. (To be fair, it is basically a park because it's a Revolutionary War site and a National Historic Landmark, and therefore affiliated with the National Park Service, so there.) Green-Wood's virtues are many: it's never crowded (unless you count the permanent residents), its 478 acres of rolling hills are enough to get lost in (I accidentally walked half its circumference last weekend), it's impeccably kept, it's home to many birds and century-old trees, it's free, and it has some nice views of Manhattan. It's brimming with dead bodies, true, but you can't beat it for introspection on a cool, colorful October day.