Frédéric Chopin

The heart of Frédéric Chopin is preserved in a pillar of Holy Cross Church in Warsaw. After Chopin died in Paris on 17 October 1849 at the age of 39, his heart was removed during an autopsy performed by the physician Jean Cruveilhier. While his body was buried at Père Lachaise Cemetery, the heart was preserved in alcohol and later taken to Poland by his sister Ludwika Jędrzejewicz in accordance with his wishes.

Adapted from the Wikipedia article on Heart of Frédéric Chopin.