Sir Isaac Newton primarily worked at Cambridge University in England. However, he also derived some of his most important theories at his parents' home in Woolsthorpe, an English village in the county of Lincolnshire.
Isaac Newton studied at the University of Cambridge as an undergraduate student from 1661 to 1665. In 1665, the university temporarily closed due to an outbreak of plague. Isaac Newton returned to Woolsthorpe, the village of his birth, where he did important work on the subjects of calculus, planetary motion, light and color. In 1667, Newton returned to Cambridge, where he continued this work. In 1687, he published the "Principia," which summarizes his contributions to mathematics and physics.