Corsica is home to numerous historic churches that are worth exploring on a rainy afternoon. Visit the Cathédrale Notre-Dame-de-l'Assomption in Ajaccio, a stunning cathedral with beautiful architecture and intricate artwork. Another notable church is the Église Saint-Jean-Baptiste in Bastia, known for its impressive baroque interior. Take your time to admire the religious art, soak in the peaceful atmosphere, and learn about the island's religious heritage.