Altarpieces, also known as reredoses or retables, are decorative panels or sculptures placed behind the altar in Christian churches. These pieces are often intricately designed with religious imagery and were intended to provide a focal point for worshipers during religious services. Other synonyms that can be used for altarpieces include altar screens, triptychs, and polyptychs. Altarpieces are considered to be important works of art and many famous artists like Michelangelo, Leonardo da Vinci, and Jan van Eyck created such pieces. Today, altarpieces can be found in museums or private collections and are viewed as significant cultural objects, representing a period of religious art and devotion.