Lassalle house, Educational center in Menzingen, Switzerland.

Lassalle House is a retreat and conference center run by Jesuits in the village of Menzingen, in the canton of Zug. The grounds include a main building with guest rooms, meeting rooms, a chapel, and a meditation hall, set at the edge of a forest on a hillside.

The site began as the Bad Schönbrunn spa, which could not survive after the First World War; a society bought it in 1929 and Jesuits ran it, giving Ignatian exercises in the former spa building. That building was demolished and replaced in 1968–1970 by a new education house under Father Josef Stierli SJ, designed by Zurich architect André M. Studer. In 1993 Niklaus Brantschen SJ repositioned it as a centre for spirituality and interreligious dialogue and named it Lassalle-Haus. The Jesuits held a final farewell on Pentecost Sunday, 24 May 2026, and the property is to be sold.

The house is named after Hugo Makibi Enomiya Lassalle, a Jesuit considered a pioneer of Buddhist-Christian dialogue and a renewer of spirituality. Since 1993 it has run programmes in Zen, contemplation and Ignatian exercises, and in 1999 Niklaus Brantschen and Pia Gyger founded the Glassman-Lassalle Zen line here.

The center sits in a rural area outside the village, so arriving by car is the easiest option, though a bus connection from Zug is available. Rooms and program spots are limited, so booking in advance is strongly recommended.

Architect André Studer designed the building using harmonic architecture, a method where the proportions of rooms correspond to musical intervals. Visitors who know this can walk through the spaces and hear them differently, as if the walls themselves encode a kind of silent music.