The Cistercian Abbey of Rein was a donation made by Leopold I. in 1129, the year of his death. From 2004 to 2006, in the course of a concept of revitalization, excavations in the space of the cloister and the east wing of the old convent were taking place.The archaeological record concerning the cloister brought the following result: To the south wing of the cloister a square, Romanic and later a polygonal, Gothic fountain house, with a better channel flow was attached. As the Romanic cloister had been too big according to the original plans, it was not finished. The Gothic one was, therefore, planned and erected following a smaller scale. Amongst other things, the excavations in the east wing exposed the eastern parts of the square chapter house. The Romanic ground level is not included in it as it was lowered in the course of the erection of a Gothic ribbed vault in order to raise the ceiling height. However, the Romantic seat step was kept, yet, with one further step attached as footrest. Within the part of the chapter house that had been dug up three graves were found, with the one in the middle, called "the monastery grave" by the monks, including a metal wrought braid as the only grave good. Among the grave fillings there were flat glass, fragments of bull?s eye pane glass and the blade of a knife next to four honey-glazed floor tiles with relief printing on them dating back to about the year 1200.