Located south of Aarhus in Moesgaard Forest and recently installed in a new building across from its old home, Moesgaard Manor, this museum houses a number of interesting archaeological artifacts, most significantly of which is the Grauballe Man, who was preserved in a local swamp for over two thousand years. Both fascinating and macabre, this blackened specimen's throat was cut from ear to ear, possibly as part of a pagan ritual of human sacrifice. You'll also encounter numerous Viking artifacts and even a surprisingly large collection of ethnography from Bahrain and other Middle Eastern countries.
If your timing is right, combine your museum-going with the yearly Viking Moot, a recreation of Viking traditions and activities that occurs at Moesgaard Beach the last weekend in July. Then again, recreated Viking buildings like a stave church and a submerged pit-house can be viewed in the immediate area year round. The cost for museum entrance is less than $15 USD.