A Masonic lodge is the basic organisational unit of Freemasonry. It is also a commonly used term for a building where Freemasons meet and hold their meetings. Every new lodge must be warranted or chartered by a Grand Lodge, but is subject to its direction only by enforcing the published constitution of the jurisdiction. By exception, the three surviving lodges that formed the world's first known grand lodge in London have the unique privilege to operate as time immemorial, i.e., without such warrant; only one other lodge operates without a warrant – the Grand Stewards' Lodge in London, although it is not entitled to the "time immemorial" status.