In 1840, a small Catholic house of worship was built. A larger Catholic church, Mariä Heimsuchung (Church of the Visitation) was built in 1912-14. The current Count of Isenburg, Alexander, is also Catholic. This came about as follows: Alexander's ancestor Karl Viktor of Isenburg was raised a Protestant in the family tradition after his father's early death, but converted to Catholicism, the religion of his mother Princess Maria Crescentia zu Löwenstein-Wertheim-Rosenberg, on May 2, 1861. Four years later, he married the Catholic princess Marie Luise of Austria, Princess of Tuscany, and since then all the ducal family have remained members of this faith. The church has been the site of many Isenburg weddings, most recently that of Princess Katharina of Isenburg to Archduke Martin of Austria-Este in 2004.