Monumental 3rd-century bath complex, once the center of Roman civic, social, and political life built by Emperor Caracalla. Learn the ancient techniques for heating water and imagine how it looked before it was stripped of its marble and mosaics. During the summer season the Terme di Caracalla are the impressive setting of Operas. Open Tue–Sat, 9am–6:15pm; Mon 9am–1pm. €6 (€ 3 reduced).
Via delle Terme di Caracalla, 52.