Empel was the ancient site of a temple dedicated to "Hercules Magusanus". It is one of only a few religious monuments from Germania Inferior that can be interpreted with a fair degree of certainty. Hercules Magusanus was the Latin name of the supreme god of the Batavians. Many votive gifts have been found near the temple. Amongst these, the many used weapons indicate that this temple was indeed dedicated to a non-Roman god. These archaeological traces are not visible for the public.