Regensburg, Germany
Regensburg is an administrative district in Bavaria, Germany. The region became a part of Bavaria in the late 12th century, when the line of the counts of Regensburg and Stefling came to an end. While Regensburg became a Free Imperial City (meaning subordinate to the emperor only), the surrounding lands were Bavarian property.
While the district dates back to medieval times, its present shape was established in 1972.