Original sentence: Buildings such as St.In 1984, the Vatican was added by UNESCO to the List of World Heritage Sites; it is the only one to consist of an entire country.Peter's Basilica and the Sistine Chapel are home to some of the most famous art in the world, which includes works by artists such as Botticelli, Bernini and Michelangelo.The Vatican City is itself of considerable cultural significance.The Vatican Library and the collections of the Vatican Museums are of the highest historical, scientific and cultural importance