Woolsthorpe Manor in Woolsthorpe-by-Colsterworth, near Grantham, Lincolnshire, England, is the birthplace and was the family home of Sir Isaac Newton. He was born there on 25 December 1642 (old calendar). At that time, it was a yeoman's farmstead, principally rearing sheep.
Newton returned here in 1666 when Cambridge University closed due to the plague, and here, he performed many of his most famous experiments, most notably his work on light and optics. This is also said to be the site where Newton, observing an apple fall from a tree, was inspired to formulate his law of universal gravitation.
Now in the hands of the National Trust and open to the public all year round, it is presented as a typical seventeenth century yeoman's farmhouse (or as near to that as possible, taking into account modern living, health and safety requirements and structural changes that have been made to the house since Newton's time).
New areas of the house, once private, were opened up to the public in 2