Complex sentence: It is perhaps most famous as the birthplace of James K. Polk, the 11th U.S. president, his home is no longer standing, but an original cabin from that time period is kept there, symbolic of the one he was born in.
Split into simpler sentences: It is perhaps most famous as the birthplace of James K. Polk, the 11th U.S. president. His home is no longer standing, but an original cabin from that time period is kept there, symbolic of the one he was born in.