The Lodge of Edinburgh (Mary's Chapel), No.1, is a Masonic Lodge in Edinburgh, Scotland. It is designated number 1 on the Roll (list) of lodges of the Grand Lodge of Scotland, and as it possesses the oldest existing minute of any masonic lodge still operating (31 July 1599) and the first historical reference of a non-operative or speculative freemason being initiated as a member (1634), it is reputed to be the oldest Masonic Lodge not only in Scotland, but the world. The lodge meets at 19 Hill Street, in the New Town, in a building erected in the 1820s.