A more thorough explanation:

A muniment house is a historical term used to describe a place where important documents such as titles, deeds, and other evidences of title were stored. These places were usually rooms located in castles or cathedrals.

• The Tower of London has a muniment room where important documents related to the history of the tower are kept.
• The muniment house in Canterbury Cathedral contains important documents related to the history of the cathedral and the city.

These examples illustrate how muniment houses were used to store important documents related to the history of a particular place. They were used to keep these documents safe and secure, and to ensure that they were easily accessible when needed.