Jamaica Pond in Late October

68 acres of glacial kettle pond, spring-fed and clean. Part of Olmsted's Emerald Necklace. The 1.5-mile path starts at the boathouse on the north shore — rowboat and sailboat rentals April through October. Late October: beeches and red maples in full color, water reflecting them so faithfully it's hard to tell where trees end and pond begins.

The pond is 53 feet deep at center, remarkably clear for a city of 700,000. Springs feed from the gravel bottom. Stocked trout, largemouth bass, chain pickerel. Weekend anglers claim the western shore at dawn with folding chairs and thermoses and the proprietary calm of decades of practice. Olmsted designed the landscape in the 1890s — paths curve to reveal views gradually, the boathouse disappears behind a grove, the road is hidden behind planted berms. The genius is editing: not what he added but what he concealed.

A great blue heron fished the shallows near the outlet, striking with that sudden violent thrust that always startles. Free, year-round. Orange Line to Jamaica Plain. October for foliage, July for sailing, any month for a path Olmsted designed to make city dwellers feel they'd left the city. The trick still works.