Kloster Rüti
The foundation of the Rüti Abbey probably enabled "Lütold IV" to secure goods from the legacy of Alt-Rapperswil around 1192 to escape the clutches between Toggenburg and Neu-Rapperswil. In association with Rudolf II von Rapperswil a private church in Seegräben went over to the Rüti Abbey in 1206. A visible sign of the upturn of the Regensberg family was the decisive transformation of the ancestral seat as high medieval aristocratic residence with walls made of stone instead of a palisade and the elaborate shell of the keep. Shortly after the founding of the town of Grüningen which probably served as security for controversial goods in the Zürich Oberland, in 1219, on the mediation of the Archbishop "Eberhard of Salzburg", a brother of Lütold V, the Kastvogtei on Rüti went to "Neu-Rapperswil". "Lütold VI" was looking for a better penetration of his reign, and for this purpose he established from the 1240s its own service nobility ("von Lägern", "von Mandach", "von Steinmaur" and "von Tal" families). Around the middle of the century, he also founded the castle and town of Neu-Regensberg and the small market town Glanzenberg near the Fahr Abbey in the Limmat Valley.