St Mary-at-Hill is a Grade I listed Anglican parish church in the City of London, which was originally founded in the 12th century. While it has been much altered since, with some of its mediaeval fabric surviving, its original mediaeval walls remain. It was severely damaged in the Great Fire of London in 1666, being partially rebuilt with an East end designed by Sir Christopher Wren. The church is 96ft long and 60ft wide, and today takes the form of an empty shell, waiting for its furniture to be replaced. Restoration work is yet to take place, despite the church remaining open daily, and visits from the public during the September Open House London event.