Complex sentence: Nashville Parks' Most famous attraction is the Parthenon, based in Centennial Park, and is full-scale replica of the original Parthenon in Athens, which was originally built in 1897 for the Tennessee Centennial Exposition.
Split into simpler sentences: Nashville Parks' most famous attraction is the Parthenon, based in Centennial Park, which is a full-scale replica of the original Parthenon in Athens. It was originally built in 1897 for the Tennessee Centennial Exposition.