Margaretakirken is an exciting historical site located in Maridalen, Norway. Built in the 1200s, it is one of the best preserved examples of medieval architecture in Oslo and is known as Maridalsruinene on popular local slang. Margaretakirken was named after Margareta of Antiochia and currently stands as a ruin after its 1934 restoration. It's a fascinating site for architects, historians, and cultural enthusiasts alike due to its impressive stonework and gorgeous view of Maridalsvannets Northern End.