The parish church in Črna Vas is dedicated to Saint Michael and is known as Sveti Mihael na Barju (Church of Saint Michael on the Marshes). Designed by the Slovene architect Jože Plečnik and built between 1936 and 1939, it is one of the prominent works of 20th-century Slovenian architecture and a UNESCO World Heritage Site.
The task proved challenging due to the soft ground of the Ljubljana Marshes. Plečnik's innovative solutions required the church to be built on supports rammed into the mud. The bell-tower was constructed separately to reduce weight, featuring arched openings. Due to budget constraints, Plečnik used local materials such as stone from the nearby Podpeč quarry, timber, and even concrete sewer pipes to fill in the spaces.
The sanctuary has an unusual orientation: the altar is placed on the longer side of the nave, reducing the distance between the priest and the congregation. With this design, Plečnik preceded the liturgical principles set by the Second Vatican Council by several decades.
Source: "The works of Jože Plečnik in Ljubljana – Human Centred Urban Design". UNESCO World Heritage Centre.