Fodor's Expert Review Bartlett Arboretum & Gardens

This 93-acre natural sanctuary is home to 13 gardens with more than 2,000 varieties of annuals, perennials, wildflowers, and trees. There's a greenhouse, marked ecology trails (dogs are welcome), a pretty pond, and a boardwalk through a red maple swamp. Brilliant, bold colors make the wildflower garden stunning in spring.