The Basilica of St. Mary Major is one of the four major basilicas in Rome, Italy. It is dedicated to the Virgin Mary and is known for its stunning mosaics and beautiful architecture. The basilica was built in the 5th century and has been a significant pilgrimage site for Christians throughout history. The basilica features a grand interior with a coffered ceiling and a magnificent altar. It houses several important relics, including a wooden statue of the Virgin Mary, known as the Salus Populi Romani. The basilica is also closely associated with the Pope and serves as a key location for various religious ceremonies.