Groundplan of the church of St. Ursula, Freiburg im Breisgau, Germany
unknown, modifications by <a href="//commons.wikimedia.org/wiki/User:Coranton" title="User:Coranton">Coranton</a>
Plan of building 1836, modification July 2011
<span class="int-own-work" lang="en">Own work</span>, based on Stadtarchiv Freiburg im Breisgau, C1 Kirchensachen 100 Nr. 10