Here's a throwback from the Anundshög historical area here in Sweden. It has Sweden's largest burial mound that measures 9 m (30 feet) in height and 67 m (220 feet) in diameter. The mound was even larger when it was built 1500 years ago. Some local farm-workers tried to plunder it in the year 1788, but failed. The mound is unexcavated till this day. Legends say that it is the final resting place of legendary King Anund. In addition to the huge mound, there are tons of historical monuments in the

On this day in 1964, Cahokia Mounds was designated a U.S. National Landmark. Get the full story of one of its largest structures – Monks Mound – in this clip from Aerial America: Illinois. http://bit.ly/1KcnauJ | Aerial America