Miraculously spared by fire, the city's oldest church (1306) stands in the heart of the city's red-light district and overlooks a delightful cobbled square. It is not surprising that its bell tower, crowned with an elegant 16C spire, boasts a splendid view of the city. Converted into a museum in 2016, it now hosts contemporary art exhibitions, performances and a variety of concerts, enhanced by its fine acoustics and main organ (1724).