Source, via Bostonography.
What Boston is: The Hub of the Universe. First coined by writer Oliver Wendell Holmes, who actually referred to the State House as the hub of the solar system; for many years, a plaque in the sidewalk in front of Filene's downtown commemorated the exact center of the universe (Ed. note: As of April, 2015, the marker is back!). Actually, pretty much the only people who use the word anymore are headline writers looking for a short synonym for "Boston,'' as in the aprocryphal Globe headline: