In the right transept: the baroque organ produced in 1598-1601 by Luca Biagi (1548/1608) with decorations by Giovanni Battista Montano (1543/1621). It is the largest and oldest organ of Rome and one of the largest in the world; originally had 1;000 barrels and 700 more were added in 1731 after a restoration work. In 1707 it was played by Georg Friedrich Handel.- Founded during the fourth century; Saint John Lateran (Basilica di San Giovanni in Laterano; basilique Saint-Jean de Latran; Lateranbasilika ) is the Cathedral of Rome; the most important of the four major basilicas and the oldest christian church. It is considered the mother church of the Roman Catholic faithful.- First Construction: 4th century (324);Reconstruction : 17th century. interior in baroque style by Francesco Borromini (1650).New facade by Alessandro Galilei (1735)Rome; Italy (2020)