In these Boston years, he also designed the Massachusetts State Prison (1803); Boylston Market (1810); University Hall for Harvard University (1813–1814); the Meeting House in Lancaster, Massachusetts (1815–17); and the Bulfinch Building, home of the Ether Dome at Massachusetts General Hospital (1818), its completion overseen by Alexander Parris, who was working in Bulfinch's office at the time the architect was summoned to Washington.