Vehicles on Interstate 93 stream from the Leonard P. Zakim Bunker Hill Bridge into the depths of the Big Dig tunnels. The graceful wishbone design of its two supports gives no hint of the engineering challenge of crossing a navigable waterway before plunging a highway deep under the heart of a major metropolis.

Boston is a rich and varied destination – the Hub of New England, or the Universe, as they used to say. Living a little more than an hour to the north, we’re well within its orb.