One type of house known, centered around an internal courtyard, is known as a riad.[1] The term riad originates from the Arabic term for garden, Arabic: رياض‎ (riyad).[73] Historically, the term referred to a common but specific type of interior garden: one that is symmetrically divided into four parts along its central axes and typically has a fountain at its middle.[74]:57 Today, a riad also refers to historic houses which have been converted into guesthouses for tourists and visitors. A typical riad in Fes has two or more storeys, whilst having an inward focus with a central courtyard.