Perched on a small rise above the city center, Leonhardskirche is one of the oldest churches in Basel. Its origins go back to the eleventh century, and its Romanesque crypt, dating from around 1080, is the oldest part still visible today. During the Middle Ages, an important Augustinian monastery stood here before the church was largely destroyed in the earthquake of 1356. It was later rebuilt in Gothic style, with large star-shaped vaults that give the interior a bright and slender appearance. After the Reformation in the sixteenth century, the church became Protestant, and it still hosts Basel’s French-speaking Reformed community today. Inside, you can also admire an organ whose eighteenth-century case recalls the instruments of the famous Alsatian organ builder Andreas Silbermann, and it is still used for regular concerts. Around the church, the former monastery buildings have had several different roles over time, serving as offices, as a prison for more than a century, and today as a hotel and a museum of music.