Bowman's Hill Wildflower Preserve
The 134-acre preserve near the Thompson-Neely section of Washington Crossing Historic Park showcases hundreds of species of wildflowers as well as trees, shrubs, and ferns native to Pennsylvania. Stop at the visitor center and get a trail map, and then take the guided one-hour wildflower walk (included in admission and available in season at 2 pm, but call to check) or explore any of the short, well-marked trails (4½ miles in all) on your own. Wildflower blooms are seasonal, with mid-April through July a good period to visit, but fall brings colorful foliage; the website has bloom information.