The Arnold Arboretum is open year round, adjusting its hours by daylight. It spans acres and several types of terrain, from hills with great views to flat, topiaried fields. Trees and plants are labeled so you can educate yourself, or you can just follow the paths and breathe in the nature. Especially notable for its "Lilac Walk" around Mother's Day, when you can stroll amid several varieties of the fragrant flowers. You can walk your dog (but clean up) and ride your bike, but no picnicking here. Bring drinking water if it's hot, as once you're deep in the park it's hard to come by. Park on the street around the perimeter, or there is some parking inside. The Arboretum is beautiful even in winter when the trees are bare - just bundle up.
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