For two consecutive years, a team of archaeologists from Archaelogists, part of the Swedish government’s agency that manages national historical museums, began studying the ancient citadel area of Kalmar, on the Baltic Sea. The old citadel used to be the city center from the early 13th century to the mid-17th century.

The archaeological project focuses on 50 plots of land from the Middle Ages, 10 roads and parts of the city walls from centuries ago. And the results obtained far exceeded all experts’ expectations, according to Newsweek magazine on March 11.

Researchers unearthed the remains of hundreds of buildings, underground bunkers, streets and artifacts from 1250 to 1650.

“We were able to lift the veil of mystery about the city in the Middle Ages, and have the opportunity to study how ancient people lived, how they ate, and how these habits changed over time”, said project director Magnus Stibéus.

Among the 30,000 objects found, archaeologists discovered a pure gold ring, engraved with the image of Jesus and believed to date from the early 15th century. Based on its shape, they believe that it belonged to Jesus Christ. The ring’s owner is a woman.

The ring is in almost new condition and Mr. Stibéus believes someone lost it about half a millennium ago.