A 2,800-Year-Old Square Building at Seddin May Have Hosted Bronze Age Rituals

In September 2026, archaeologists at Seddin in Brandenburg, northwest of Berlin, uncovered the outline of a building that looks strange for its time and place. It measures roughly 11 meters on each side, it is almost perfectly square, and it dates to around 850 BC. The state archaeologist believes people used it for ritual purposes, and he calls it a “Templum.”

A building that breaks the local pattern

Seddin lies in the Prignitz region of Brandenburg, in a landscape that Late Bronze Age communities used heavily. The village is best known for the Seddin burial mound, a giant grave that archaeologists have studied for more than a century. Local folklore links it to a ruler called King Hinz.

The new structure stands on one of the highest points in the landscape, close to that mound. The excavated plan measures about 10.6 meters north to south and 11.4 meters east to west. That shape matters. Bronze Age buildings in northern Germany were normally long rectangles, and this almost square form is not yet known from the region’s Bronze Age.

Franz Schopper, the state archaeologist and director of Brandenburg’s heritage office, said the team believes the building served cultic and ritual purposes. Dr Immo Heske of the University of Göttingen leads the excavation. He said the discoveries highlight the special importance of the site for the European Bronze Age.

Giant pots and burned bones

Pits around the building held unusually large amounts of Late Bronze Age pottery. Some storage vessels had rims wider than 50 centimeters, which suggests that groups of people gathered to eat and drink together. Heske described the pits as holding discarded ritual vessels.

The excavators also found many animal bones, and all of them appear to have been burned on purpose. The reason is not yet clear. People may have held communal meals and then burned the bones afterwards, or they may have burned whole animals on pyres as offerings. Scientific analysis of the bones should help narrow this down.

A settlement beside the king’s tomb

The building did not stand alone. Researchers think a settlement of about 2,000 square meters existed here in the 9th century BC. Perhaps 200 to 300 people lived there, including farmers, carpenters, metalworkers and other craftspeople. That picture suggests a working community living beside one of the region’s most important monuments.

The mound itself holds a famous grave. Nobody knows who lay inside. The name King Hinz comes from folklore, and Schopper noted that Hinz is a common name, much like Heinrich, so people probably attached it to the ruler much later. No written records survive from the Bronze Age in this region. The cremated remains from the tomb, including bone fragments and teeth, were lost during World War II.

Why it matters

If the ritual interpretation holds, the building would give archaeologists a rare look at how Bronze Age communities in northern Europe organized religious life. Graves usually dominate the picture of this period. A ceremonial building, large vessels for shared meals and burned animal remains would add the living side of the story: gatherings, feasts and offerings near a monumental tomb. Heske called the find entirely new for the Nordic Bronze Age.

What we still do not know

Several questions stay open. The team has not yet explained why the animal bones burned, and no one has shown that the feasts and sacrifices happened at the same time or in the same way. The “Templum” label is an interpretation, not a finding written on the ground. Researchers from the University of Göttingen, the state heritage office and the Archäologisches Landesmuseum Brandenburg continue to work at Seddin, so the picture may change as the analyses arrive.

For now, one almost square building on a hilltop suggests that people at Seddin gathered for something special nearly 2,800 years ago.

Sources

• University of Göttingen excavation announcement (original release not located; findings as reported by the news sources below)
• HeritageDaily: 2,800-year-old temple discovery points to mysterious Bronze Age rituals
• Euronews Germany: Opferstätte in Brandenburg und König Hinz