Robinson's Quest

Greenwich: Measuring the World (Family)

A shorter, flatter cut of the grown-up Greenwich walk - a tea clipper you can walk beneath, a tunnel under the river, a naval college split in two, a museum with a rest stop built in, a house that's secretly a cube, and a red ball on a hill that drops at one o'clock. Seven stops, under a kilometre of flat riverside and park paths for the core, about 1.5 to 2 hours - plus an optional, completely free walk up the hill afterward to stand with one foot in each half of the world.