Justinuskirche

St. Justin’s Church has stood for 1,200 years, making it the oldest fully preserved building in Frankfurt—and one of the oldest churches in all of Germany: Its three-nave basilica was built between 830 and 850 during the Carolingian period. Over the course of the following centuries, it was further expanded; highlights include the late-Gothic high choir, the crucifix altar, the Baroque high altar, and the organ, which also dates from the Baroque period. You’ll experience the church in a particularly atmospheric setting during one of its regular concerts. But you can also take a special journey into the past outside: From spring through fall, the entrance at Justinuskirchplatz 2—to the left of the church—leads to the Justinus Garden. To this day, the 14 medicinal herbs are grown here that the Antonite monks used in the Middle Ages to combat the so-called “Antonite fever”—a disease caused by the poisonous ergot fungus. If you’d like to learn more about this religious order, an exhibition in the garden’s tower provides information on the history of the Antonites.