Arkona (Jaromarsburg) is a city and religious center of the Polapic Slavic tribe Rujan.

References
The city of Arkona existed until the 12th century and was located on the cape of the same name on the island of Rügen. It was described in detail by the Danish contemporary Saxon Grammaticus in the Acts of the Danes: "The city of Arkona lies on the top of a high cliff; on the north, east and south it is surrounded by natural protection... on the west side it is protected by a high embankment of 50 cubits..."

The following is a description of the temple of the god Svetovid: "In the middle of the city there was a square on which stood a temple of wood, of the most elegant workmanship... The outer wall of the building stood out with neat carvings, rough and unfinished, which included the shapes of various things. It had one entrance. The temple itself contained two enclosures, of which the outer, connected to the walls, was covered with a red roof; the inner, supported by four pillars, had curtains instead of walls and was not connected to the outer in any way, except for a rare interweaving of beams."

Then follows a description of the idol of Svetovid. The cult took place two days after the harvest. Then the methods of fortune telling were described.

In 1168, Arkona was destroyed by the Danes under King Valdemar I, who defeated the Rujan prince Jaromir. In 1185, stones from Jaromarsburg were used in the construction of the church in Altenkirchen, on the Vytautas peninsula. Altenkirchen still has the “Svantevitstone stone”. This is probably described by chroniclers: David Hitrej in the Saxon Chronicle, 16th century: “In the village of Altenkirchen, in the vestibule of the temple, one can see the image of the god Rujan, carved on a stone; the natives of the island called him Svetovid, while the current inhabitants call him Witold”.

The “History of the Kamenské Diocese”, dating back to the 17th century, reports: “That is why the evil god was called the Devil and Chernobog, or Black God, while the good god was called Belbog, or White God. A statue of this god, carved in stone, can still be seen on Rujan, on the Vytautas Peninsula, popularly called Witold, as if he were “Ancient Vytautas”. With a large head and thick beard, he looks more like a monster than an imaginary god.”

The description of the destruction of Arkona by the Danes of Valdemar the Great is also described in the “Pomeranian Chronicle” by the court historian of the Duke of Pomerania Thomas Kanczow, until 1536, as evidenced by the frequent saying “may God give”.