Complex sentence: The temple was gazetted as a National Monument in 1973, and a major renovation of the temple was initiated in 1998 and completed in 2000 at a cost of US $2.2 million.
Split into simpler sentences: The temple was gazetted as a National Monument in 1973. A major renovation of the temple was initiated in 1998 and completed in 2000 at a cost of US $2.2 million.