Minor archaeological excavations were conducted in the 19th century, and in 1905 major projects of excavation and restoration began under archaeologist Leopoldo Batres. The Pyramid of the Sun was restored to celebrate the centennial of Mexican Independence in 1910. Major programs of excavation and restoration were carried out in 1960-65 and 1980-82. Recent projects at the Pyramid of the Moon and the Pyramid of the Feathered Serpent have greatly expanded evidence of cultural practices. Teotihuacán features museums and reconstructed structures.