Questions 1-4 refer to the following article from an art magazine.

The Musee du Louvre in Paris, France is one of the biggest art museums in the world. (1)..... not surprising that the Louvre receives more visitors than any other museum in the world. (2).... King Philip II who first built the Louvre. He built it as a fortress during the 12th century with no intention of ever creating a world- famous museum. (3).... many famous works at the museum, but the most famous is the Mona Lisa, painted by Leonardo da Vinci. Today, the Louvre has made (4).... the world's most treasured pieces of art.