Arnold Arboretum
Jamaica Plain
- Free
- Morning or golden hour
- Nature
Harvard's living museum of trees doubles as the most romantic free date in the city: 281 acres where you can lose each other and find each other again under a canopy older than the country.
Tip Walk up Bussey Hill for the city skyline framed by trees — it's the payoff most visitors miss. Go in early May for the lilac collection, when the whole hillside smells like spring. The Hunnewell Visitor Center has free maps; grab one and pick a loop so you don't just wander the main road.