Home of Marie Curie, Warsaw has been a historically significant city for centuries. From the Slaughter of Praga to the Warsaw Ghettos, the city has seen its share of dark and sometimes violent times. In more modern times, Warsaw brings a bit of light with its many music festivals. These include the Jewish Culture Festival - The Singer's Warsaw and the Old Polish Music Festival. Warsaw is home to the Polish National Opera and the Warsaw National Philharmonic.