The Holy Cross Church has witnessed more student demonstrations and tear gas than any other church in Poland. During the Warsaw Rising, it was the site of heavy fighting between the insurgents and the Germans. It was seriously damaged, but some original Baroque altarpieces have survived and adorn its interior. Note the epitaph to Frédéric Chopin on the second pillar on the left-hand side of the nave. It covers an urn containing the composer’s heart, brought from Paris after Chopin’s death and placed here in accordance with his will.