SoWa Open Market

This guide to SoWa Open Market in Boston starts by asking why Sunday's food trucks and flower stalls sit beside a brick fortress with Romanesque arches, once the largest electrical generating plant on earth when it opened in 1891. You'll hear how it powered Boston's first fleet of electric trolleys for the West End Street Railway Company, replacing a city of horse-drawn cars almost overnight. It follows the plant's coal-fired boilers and dynamos pushing direct current out along the South End, and the thousands of horses that fleet put out of work.