Cambridge Center Roof Garden

Mary Lennox would be proud. Atop a multi-story parking garage in Cambridge’s Kendall Square sits a clandestine strolling garden beautifully besieged by tulips, trees and rose bushes. Though not as undiscovered as it was a few years back—there’s actual signage now, and a ping-pong table, too—the garden remains the perfect spot for a restorative midday lunch for one.