Complex sentence: The festival of Inti Raymi, which honors the sun god and was originally meant to celebrate the start of a new planting season, now attracts many tourists each year to Cuzco, D'Altroy 2003, pg.154-155 the ancient capital of the Inca Empire.
Split into simpler sentences: The festival of Inti Raymi honors the sun god and was originally meant to celebrate the start of a new planting season. It now attracts many tourists each year to Cuzco, which is D'Altroy 2003, pg.154-155 the ancient capital of the Inca Empire.