Monastery Immaculate Conception, Benedictine abbey in Ferdinand, United States

The Monastery Immaculate Conception, locally called "the Castle on the Hill", is a Benedictine convent in Ferdinand, Indiana, built on a hill east of town known as Mount Tabor. Construction began in 1883 and the quadrangle residence was completed between 1886 and 1888, with a large addition in 1903. Its Romanesque Revival chapel, designed by St. Louis architect Viktor Klutho, was begun in 1915 and finished inside in 1924.

Four Benedictine sisters founded the monastery in 1867 to educate children of local settlers in Ferdinand. The founders laid the groundwork for an institution that grew and evolved over succeeding generations.

The chapel displays 89 angels through stained glass windows, statues, and carvings made by German artisans. These hand-carved wooden pews reflect the same skilled craftsmanship and shape the interior of the house of worship.

The monastery stands on Mount Tabor, a hill east of Ferdinand, about fifteen minutes from St. Meinrad Archabbey. The grounds include the 1883–1888 main building, the 1915–1924 chapel, a kitchen garden, the gift shop selling Simply Divine Bakery goods, and Benet Hall, converted in 2016 into apartments for residents 55 and over.

The sisters have worked in many professions, including teaching, social work, nursing, law, spiritual care, and library work. They also operated their own bakery, showing how varied their roles were in community life.