The Trelleborg near Slagelse on the Danish island of Zealand. Similar to the other Viking ring castles found so far, it was designed as an exact circle with two roads that crossed at right angles in the geometric center and led to the four gates with two always opposite to each other. In each of the four quarters stood four almost identical longhouses arranged in a square. The whole fortress may have supplied room for some 1,300 people. It was constructed near the year 1000.
Western style fighting focuses heavily on authenticity of weapons, clothes and other gear (non-authentic protective gear like padded gloves and leather armguards is still allowed). Notice the many spears, both one- and two-handed.