Kirchenanlage Maria Wörth, Religious architectural complex in Maria Wörth, Austria.

Kirchenanlage Maria Wörth is a religious complex situated on a rocky peninsula at Lake Wörthersee and comprises the Parish Church of St. Primus and Felician alongside the Winter Church. The ensemble includes multiple buildings, three cemetery entrances, and burial grounds arranged as a cohesive architectural unit.

The site, recorded as "Uueride", passed to the Diocese of Freising between 875 and 883 and became a mother parish and mission centre for Carinthia under the monastery of Innichen. A church built under Bishop Waldo of Freising is documented in 894. Around 1146 Bishop Otto of Freising founded a collegiate foundation with a provost and five canons, later six; the church was consecrated in 1155. A severe fire damaged it in 1399.

The parish church is dedicated to the Assumption of Mary, celebrated as Mariä Himmelfahrt. Its high altar of 1658 holds a late Gothic enthroned Madonna with Child carved around 1460, flanked by the church patrons Primus and Felician. The pulpit of 1771 shows the twelve-year-old Jesus in the Temple and carries the Latin inscription "MALLEUS CONTERENS PETRAM EST VERBUM MEUM".

The complex sits on a rocky peninsula and is reachable on foot from the shoreline, allowing easy exploration of the entire site. It maintains regular religious services, so visitors can choose times that suit their interests and schedule.

The church complex originally stood as an island until landfills and declining water levels connected it to the mainland around 1770. This geographical transformation, though invisible today, helps explain how the site evolved into its current form.