Free Your Mind: The Top Free Art Museums And Galleries.
La Basilica di San Pietro in Vaticano, Rome – Saint Peter’s Basilica isn’t really a museum; to some visitors, the papal basilica is a place of pilgrimage, but to many others, the main attraction are the works of art adorning the awe-inspiring domed structure, particularly Michelangelo’s touching Pietà sculpture. Daily Mass is still held there, but for all intents and purposes, it serves as a museum the rest of the time. All other Vatican museums, including the Sistine Chapel, are free on the last Sunday of the month. vaticanstate.va