What is apsidal chapel?

An apsidal chapel is a chapel that is located in a semicircular, or apse-shaped, extension of the main church building. It typically contains a high altar and is reserved for special religious ceremonies, such as weddings or funerals. Apsidal chapels are often found in medieval European cathedrals and churches, and were frequently used by royalty and other nobles as their private chapels. These chapels are historically significant, as they were often decorated with elaborate artwork and sculpture, and served as important centers of religious devotion and artistic expression. Today, apsidal chapels can still be found in many churches and cathedrals around the world, and are often open to the public for tours and worship services.