 St. Blasien abbey was secularized in 1806.The last remaining monks relocated to the St. Paul diocese in the Lavant Valley in the Alp-city Carinthia, taking with them art treasures such as the remains of 12 Habsburgs and the Cross of Adelheid.On September 26, 1808 Baden's new Grand Duke Charles Frederick ordered a review to determine whether the expensive maintenance of the dome still made sense or if the money should instead be used to build a more modest but less costly parish church.