what was the pantheon used for
It is one of the best-preserved of all Ancient Roman buildings. It has been in continuous use throughout its history, and since the 7th century, the Pantheon has been used as a church dedicated to  St. Mary and the Martyrs (Latin: Santa Maria ad Martyres) but informally known as Santa Maria Rotonda.he grey granite columns that were actually used in the Pantheon's pronaos were quarried in Egypt at Mons Claudianus in the eastern mountains. Each was 39 feet (11.9 m) tall, 5 feet (1.5 m) in diameter, and 60 tons in weight. These were dragged more than 100 km (62 miles) from the quarry to the river on wooden sledges.