It is situated on the Lindenhof hill's eastern slope named Herrenberg, just 100 metres (328 ft) west of the Stadtmuseum Rapperswil.

[1] The chapel stands on an approximately 4 metres (13 ft) high base – that in fact are the foundation walls of the ossuary – as a rectangular single naved church.

For this reason, a staircase to the lower part of the churchyard was built on the west side, and the access to the ossuary was made now one level higher than before.

On the cross hung a corpus from the period around 1490, part of the late Gothic decoration of the neighbouring parish church where it found a place in its choir in 1979.

The semicircular chancel arch is decorated on its side walls with the figure of a guardian angel with child and a statue of Joseph with the infant Jesus.

The originally Baroque altar stands today in the Saint Pancras church in Bollingen; it was replaced by a neo-gothic altarpiece whose center is a lovely statue of Our Lady.

One painting on the back wall dates from the Baroque and presents Mary as intercessor for the poor souls, the oval image of Aloysius Gonzaga may be a work by the Rapperswil artist Elisa (Louise) Fornaro (1726–1796).

Mariensäule (literally Maria column) is situated between the castle's exterior walls, the parish church and Liebfrauenkapelle and was moved from Bern to its present location in 1914.