By Nate Feldman A tree at peak colors along the Chester Valley Trail It is late October, and the trees are reaching peak colors for the fall foliage on streets and in parks throughout the area. Some great places to spot vibrant orange, red, and yellow leaves in and around Berwyn include alongside the Chester Valley Trail and different wooded areas throughout various neighborhoods. Crabby Creek Park has a dirt path that goes through dense trees showing off bright yellow and orange leaves.