Complex sentence: The town is home to the medieval era Haldum Church, which in 2004 became famous as an archaeological site, when the Moesgård Museum conducted excavations in the area surrounding the churchyard that subsequently yielded notable Viking Age and Early Medieval period findings.
Split into simpler sentences: The town is home to the medieval era Haldum Church, which in 2004 became famous as an archaeological site when the Moesgård Museum conducted excavations in the area surrounding the churchyard. This work subsequently yielded notable Viking Age and Early Medieval period findings.